Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

All Questions

Tagged with
0
votes
1answer
28 views

Calculate stroke force and angle for a ball rolling on a surface to reach a destination position (optimal golf putt)

I'm trying to find an algorithm which calculates the optimal golf putt (angle, force) given a 3D surface (obtained through Poisson reconstruction), start and destination position (hole). I guess that ...
-1
votes
2answers
223 views

What causes a particular object to have a tendency to go outwards in circular motion when the centripetal force is inwards to the center [duplicate]

Like a circular bead with a thread passing through it and the system being rotated . It can't be centrifugal force as it is pseudo only and has no existence when we are already in an inertial frame ...
2
votes
5answers
449 views

Would you be able to get off of a frictionless surface?

Imagine that you are standing (naked) in the center of a level circular disk (with a radius of, say, 3 meters) that is completely frictionless. Without resorting to blowing air or excreting any ...
0
votes
2answers
57 views

Is this the correct way to think about why static friction is directed radially during a turn on a level surface?

So after much pondering of the fact that the net static friction force points in the center, perpendicular the tangential motion, I thought of this explanation. If we look at a car travelling around ...
0
votes
2answers
172 views

Golf ball curving to right or left when putting along a slope

I will use the example of a golf ball here, but there are many other examples I guess. My question is: A golf ball is at rest on an incline that slopes from right to left. I take it the force from ...
1
vote
0answers
54 views

A trio of spinning marbles

My little brother showed me this devised act in which he stuck three marbles in a triangular pattern When he spun any of those marbles, the triplet would first rotate normally, but moments later, ...
0
votes
1answer
1k views

Question about friction in rolling without slipping?

I was under the impression that for a ball/cylinder to roll without slip, there must be a static friction force that opposes the direction of motion. Why, in this case, does the friction act in the ...
4
votes
1answer
60 views

Friction Resulting from Differing Masses

A friend and I are curious about something. We created a ramp from some wood (like a skate ramp) that's not purely circular in nature. We did so with the intent to test how the mass of an object can ...
0
votes
4answers
740 views

When is the direction of the static friction negative?

i thought that the force of static friction exerted on an object is always going in the opposite direction of any other force exerted on the same object. however, this problem seems to disregard that ...
2
votes
2answers
579 views

Mass, velocity and inertia [closed]

If 5 ozs of weight is my engine, and this weight starts in the back of a four wheeled vehicle traveling down a decline gaining speed due to the engine mass to allow its inertia to carry it across a ...
-1
votes
1answer
9k views

How is inertia related to friction? [closed]

Inertia is the tendency for moving object to continue to move at constant velocity. My book says In order to initiate motion in an object, inertia must be overcome to start the movement. But ...
9
votes
4answers
2k views

Does a truck stop faster if the stack on the back of truck is stable or if it moves forward?

My question in the title might not be very descriptive so I am re-writing it here: If there is a truck in motion and it has stack of hay (lets suppose) on the back. Now if the truck comes to a sudden ...
2
votes
1answer
391 views

What determines the speed required to pull a table cloth?

I was watching this show "Street Genius" on National Geographic and the host Tim Shaw demonstrated an experiment about Inertia, What he did was, He tied one end of a table cloth to a car through a ...
0
votes
2answers
915 views

Is inertia present in a body while in state of motion?

According to Newton's law of inertia (written in book:The Mathematical Principles of Natural Philosophy**) it is said that in all objects having mass, have always inertia included in their property ...
4
votes
8answers
2k views

How would you improve braking capability on a hovercraft? [closed]

Pretty much letting my mind free-wheel. Assume a fleet of air-supported hover-craft were to replace cars/etc on the streets. Assume also that the present traffic-signals/pedestrian rules remain ...