Skip to main content

Questions tagged [centripetal-force]

any force responsible for maintaining an object on a curved path around a fixed center. In introductory coursework this is usually "uniform circular motion" and yields several simple and useful relations. Not to be confused with the centrifugal pseudo-force experienced in an accelerated referenced frame.

Filter by
Sorted by
Tagged with
-1 votes
3 answers
65 views

A Force Perpendicular to the Velocity changes only the direction of motion?

Why does a force that remains perpendicular to velocity alaways only change the direction of the motion(circular) and not induce a velocity in the perpendicular direction???
Atharva Thakur's user avatar
0 votes
0 answers
27 views

Off-centered IMU and how to determine the centripetal force acting on it

I apologize if this is the wrong place to ask questions about IMUs and how they work. My question is: if a 6-DOF IMU is placed off-center from the center of mass of the body being measured, and the ...
Reaver_332's user avatar
1 vote
3 answers
70 views

Why do objects in circular motion move outwards instead of inwards? [duplicate]

I know that whenever an object undergoes circular motion then it has a centripetal acceleration towards the centre and a tangential acceleration. Due to these accelerations I had thought that ab ...
Madly_Maths's user avatar
4 votes
4 answers
342 views

What is the relationship between gravitation, centripetal and centrifugal force on the Earth?

I'm trying to analyze a situation wherein a ship is moving across the surface of the earth. I am trying to analyze this situation in a reference frame that is rotating with the earth (NED frame). I am ...
john morrison's user avatar
0 votes
1 answer
885 views

Why, when we calculate forces in banking of roads, we do not take the centripetal force but the centrifugal force?

I know the we only apply centrifugal force when in non inertial frame of the object but in banking of road questions, why cant we make equations from inertial frame rather than non inertial frame? ...
Gaurav Batra's user avatar
11 votes
5 answers
4k views

If you're holding on to a playground spinning wheel and then let go, is your trajectory straight or curved?

Let's say you are on one of those playground spinning wheels and then you let go. I've heard that you will fly off tangentially to the wheel, but do you really fly off in a straight line, since you ...
scm's user avatar
  • 776
-1 votes
1 answer
64 views

Forces in tangentially-accelerating circular motion

Let's say a car is moving along a semicircular path. It moves with constant speed for the first half. Then, it accelerates with constant tangential acceleration for the second half of the semicircle. ...
Aliki G.'s user avatar
0 votes
1 answer
62 views

Apparent contradiction regarding centrifugal force

Consider an inertial reference frame $I$, and a point object $K$ which is at rest with respect to $I$. $K$ is not at the origin of $I$. Consider another reference frame $I’$, with the same origin as $...
Soham Saha's user avatar
0 votes
2 answers
54 views

How does the centripetal force on the butt of a golf club's shaft produce torque that rotates the club/clubhead forward?

In the top picture, which is how torque is typically explained, the center of rotation is different than in the bottom picture. I think I understand how this works in the top picture, but I don't see ...
delusionist's user avatar
2 votes
1 answer
53 views

Motion of a particle falling along a rough circular rail

I’ve recently been reminded of an old disagreement I had with a very well-respected professor at my university back in my student days, I was tutoring for one of his courses and had been assigned the ...
LvdT's user avatar
  • 183
0 votes
2 answers
55 views

Is the centripetal force always constant? [closed]

A toy car, 50 g slides on a looping track as shown in the figure. The radius of the circular part of the track is 0.20 m. a) We let the car start from point A, which is 0.60 m higher than B. Calculate ...
user avatar
0 votes
1 answer
105 views

What exactly is the normal force?

Let $T := 24\times 60\times 60 [s]$. Let $r [m]$ be the radius of the Earth. Let $g [m/s^2]$ be the gravitational acceleration at the equator. Let $m [kg]$ be the mass of Mr. A. Mr. A is standing on ...
佐武五郎's user avatar
1 vote
1 answer
62 views

Why centripetal acceleration does not causes the rotating particle to reduce the radius of its circular path?

I think that the centripetal force must develop a corresponding centripetal velocity that keeps on increasing as time passes because, $v = u + at$ Centripetal velocity constantly increases in terms of ...
Peter swift's user avatar
5 votes
3 answers
278 views

Weightlessness at the highest point of a vertical circular motion

Suppose there is a mass fixed at one end of a piece of massless rope. The mass is whirled in a vertical circular path, holding the rope from the other end. The velocity provided is the minimum ...
Yara Try's user avatar
  • 145
2 votes
2 answers
264 views

How does the centripetal force change when the radius changes?

The centripetal force for a constant radius is $m\frac{v^2}{r}$, but what if that radius is changing as you're spinning the object. Say a spring with a spring constant $k$ that is being spun with a ...
SSL2's user avatar
  • 21
1 vote
1 answer
46 views

Normal force and when does it cancel out

If i have this box, making a turn and there is tennis ball inside, then how in terms of forces can the tennis ball stay how i drew it, all the way around the circle? What provides the centripetal ...
Safa yousif's user avatar
2 votes
1 answer
62 views

How do you calculate the centrifugal force generated by the bunches of protons inside the LHC?

I've determined that, during operation, the LHC accelerates 2808 bunches of protons with roughly 120 billion protons per bunch up to 99.9999991% the speed of light. I'd like to calculate how much ...
phil1008's user avatar
  • 271
3 votes
2 answers
62 views

Relative acceleration in case of centripetal acceleration

Say there is a disc of radius $R$ which is rotating about its centre with an angular velocity $\omega$. Now the acceleration of a point on the disc at $R/2$ distance is $-\frac{\omega^2R }{2} \hat{r}$ ...
Alex francis's user avatar
3 votes
2 answers
290 views

Normal force in a hypothetical rotating space station with artificial gravity

In order to simulate gravity on hypothetical space stations, one approach involves rotating the space station so that a centripetal force is present. Occupants within the space station's frame of ...
user12277's user avatar
  • 395
0 votes
2 answers
63 views

What is the net force acting on an object in circular motion?

For a particle in circular motion about a point due to a central force, is it correct to say that "net force on the particle is 0"? Obviously there is a force on the particle defined by the ...
SHINU_MADE's user avatar
0 votes
2 answers
44 views

Uniform circular motion requirements

why is a constant force and constant linear speed requirements for uniform circular motion? I think I understand the idea of constant force: this is what comes to mind when I think of force changing ...
Safa yousif's user avatar
3 votes
4 answers
225 views

G force roundabout question

If I'm driving and I want clear a roundabout as fast as possible, but I only can take so much G force before dying, do I drive in the inner or outer lane. Assuming that the maximum G force I can take ...
MiaLee's user avatar
  • 41
1 vote
3 answers
136 views

Why does a ball tied to a spring move outwards when rotated (ground frame)?

Suppose a bob or a ball is tied to a spring which in turn is pivoted to a certain point on a table as shown, if the ball is given velocity $v_o$ perpendicular to spring it moves in circular motion and ...
PinkAura's user avatar
  • 349
-1 votes
2 answers
48 views

Vertical Component of Normal Force on Bank

Consider the above diagram. Apparantely the vertical component of the normal force should balance $mg$. However, this cannot be the case. The normal force is equal to the component of $mg$ ...
Quin Gardiner Bax's user avatar
0 votes
2 answers
121 views

Bead moving along a free ring that is initially at rest

Consider this diagram in which the ring of mass $M$ is at rest initially and the bead of mass $m$ has velocity $u$ as shown. Why isn't the force of interaction (normal force) between the bead and ...
PinkAura's user avatar
  • 349
0 votes
2 answers
58 views

How can vertical component of normal force balance the weight?

Consider a bicyle on a bank. The weight of the bicycle acts downwards, we can resolve this vector to the normal force and a component down the bank. Hence the normal force is less than this weight ...
Quin Gardiner Bax's user avatar
0 votes
1 answer
43 views

Which force acts on the hand and its direction in case of uniform circular motion? [closed]

Answer key: [Note: (Please verify this in your comments) The answer key for ii is wrong,right? It has to be non-uniform as the direction of the acceleration is everchanging.] now , for iii, I believe ...
Darshit Sharma's user avatar
2 votes
2 answers
294 views

Why is $R$ not the Radius of Curvature, here? Or is it?

Consider this question, Two masses A and B are connected by a massless string. A rest in equilibrium on a rough horizontal table and limiting friction is acting on it. B hang vertically at a distance ...
PinkAura's user avatar
  • 349
1 vote
2 answers
75 views

Is this how friction is a centripetal force when a car is making a turn? [closed]

I've been wondering why frictional force acts as a centripetal force when a car is turning; my intuition would not lead me to believe it would act perpendicular to velocity, but I think I have at ...
Nathan11474's user avatar
2 votes
1 answer
78 views

The Kerr metric applied to a solid rotating body

Can the Kerr metric be used as an exterior solution to analyse the vacuum outside a rotating solid body or does it only apply to a rotating black hole? If it can't, is there an alternative exterior ...
KDP's user avatar
  • 5,911
0 votes
2 answers
139 views

Why does circular motion have a resultant force acting towards the centre? [duplicate]

Why does the resultant force in centripetal force act towards the center of the circle in uniform circular motion and not at any other point, why only the center, always?
the mega ruler's user avatar
0 votes
0 answers
17 views

Kinetic Friction during turning around a road [duplicate]

If a body is sliding in a circle, where the road has some non-zero friction, obviously there exists some static friction towards the radius, as the relative motion in the radial direction is zero, but ...
Srish Dutta's user avatar
1 vote
2 answers
81 views

Why do a ring expand radially on rotating it?

The reason told to me is due to centrifugal force. But centrifugal force is a pseudo force so how can we observe its effects like increasing radius of ring in other frame. Also as per me due to ...
S K's user avatar
  • 45
0 votes
2 answers
49 views

How many components does the net force have on a rotating object?

I understand that there is the radial and tangential force components acting on a spinning object, but according to the attached image from my book, there is a third component F_1z that is ...
Am001's user avatar
  • 3
0 votes
2 answers
85 views

How would we explain a whirlpool shape without using centrifugal forces?

How would we explain a whirlpool shape formed in a bucket without using fictitious forces like centrifugal force? I am in high school and my teacher always gave me the explanation for shape of ...
Shyam's user avatar
  • 39
0 votes
3 answers
65 views

Can the tension on a rope for example diminish due to centrifugal force and if so why do we stay in orbit; what would happen if centrifugal force won? [closed]

the rope is made of string and the centrifugal force is only slightly stronger than the centripetal force will the rope tension be enough to keep the object there the centripetal force s 3 and the ...
nerd's user avatar
  • 1
0 votes
1 answer
39 views

Would a stick be perpendicular to an attached wire in centripetal motion without gravity? [closed]

I'm visualizing a system where we have a stick with some non-negligible length attached to a string. The string is attached to a fixed point on the other end, and the stick begins rotating around the ...
abokifas's user avatar
1 vote
2 answers
135 views

Centripetal acceleration with constant speed

If a particle is moving in a circular path at a constant speed, how can we represent its centripetal acceleration? Since the speed is constant, I assume that the centripetal acceleration describes how ...
VV_721's user avatar
  • 133
2 votes
1 answer
342 views

Tension at highest point in vertical circular motion

Suppose a body is attached to a string, and is whirled around along a vertical circular path. At the highest point, it falls downward. Why do we say that the tension is 0? Tension and the force of ...
ivy's user avatar
  • 21
0 votes
1 answer
101 views

Where is the radial acceleration in the expression of the acceleration in spherical coordinates?

I know that the aceleration vector in spherical coordinates is $$\vec{a}=(\ddot{r}-r\dot{\theta}^2-r\sin^2 \theta \dot{\phi}^2)\vec{u_r}+\dots$$ and since ever I have known the centripetal ...
Ulshy's user avatar
  • 69
0 votes
1 answer
40 views

Why is there a limiting value of friction (to avoid slipping) when driving in a circle

When thinking about this in reality and using equations I come to different conclusions. Using F = mv^2/r In reality I know that if the speed is too fast the car will not be able to go around the ...
Muffin's user avatar
  • 37
0 votes
2 answers
72 views

i've been told that a motor bike can turn on a frictionless horizontal surface by leaning towards the horizontal

their reasoning was that when the bike lean towards horizontal the reaction acting on the bike by surface will act in an angle through the center of gravity of the slanted bike(not perpendicular to ...
cannister super's user avatar
0 votes
2 answers
104 views

When the static friction is the centripetal force, what is the opposite force?

Consider a circular horizontal plane (like a round tabletop) rotating around its center. Consider a body A resting on this tabletop. Since the tabletop is rotating around its center, the body is ...
Aviv Cohn's user avatar
  • 605
0 votes
1 answer
82 views

Relativistic Centripetal Force/Centrifugal Effect

I wonder how would we go about to calculate centripetal/centrifugal acceleration for relativistic objects moving at near the speed of light , do we use the original acceleration = force/mass, or input ...
A Curious Mind 's user avatar
-1 votes
3 answers
319 views

Direction of change in Velocity Vector in Uniform Circular Motion [closed]

This is a snap of a textbook while describing Uniform Circular Motion. For all the diagrams, and by the vector law, the directions of the del(v) vector is perfectly fine. But I am confused why this ...
soumyadip_poddar's user avatar
14 votes
7 answers
2k views

Does a vehicle turning on a banked road need to turn its wheels?

A vehicle drives in a circle on a track at constant speed at with radius of curvature $\rho$. The vehicle's acceleration is $$a = \upsilon' T + \kappa (\upsilon)^2 N \\ = \kappa (\upsilon)^2 N.$$ The ...
SRobertJames's user avatar
4 votes
1 answer
823 views

How can a body rotate with no forces acting on it?

Can a body being acted upon by no force in free space keep rotating, given it was initially rotating? I feel like it can, however then where does the centripetal force come from? Am I right in ...
Eisenstein's user avatar
1 vote
2 answers
52 views

${}$ Conservative and Non-Conservative Forces

When we equate (with opposite sign) coulombic force to the centrifugal force for a electron revolving in the orbit. Basically we are equating a conservative force with the non-conservative force. Can ...
rahul pancholi's user avatar
1 vote
2 answers
80 views

Why don’t you fall when you lean on a bike while it turns?

Let’s say you’re on a bike and you turn left and also lean left with it. As we know fron experience you remain stable. How is this? There is obviously a torque caused by gravity at the center of mass ...
WilliamHarvey's user avatar
0 votes
1 answer
32 views

Centripetal force on electron moving through curved wire [duplicate]

Suppose we have a curved ohmic conductor in the form of a circular arc with some thickness say $d$. Now, say we apply a potential difference across the two ends of the conductor. The electrons will ...
Srish Dutta's user avatar

1
2 3 4 5
18