Linked Questions

2 votes
1 answer
1k views

What happens when a force is not applied on the centre of the mass? [duplicate]

The answer to this question force applied not on the center of mass states that for a force applied not directly on the center of mass will have the same linear acceleration as one applied on the ...
QCD_IS_GOOD's user avatar
  • 7,030
1 vote
1 answer
1k views

One force applied to one point of a rigid body: centre of mass and torque [duplicate]

Let us suppose that one force is applied to a point of a rigid body that is not acted upon by any other force. I think an example can approximatively be a rock in deep space, far from any relevant ...
Self-teaching worker's user avatar
0 votes
2 answers
2k views

Torque Equation for a point other than the axis of rotation [duplicate]

I am having a problem while dealing with the so called torque equation τ=Iα, which I am describing with the help of an illustration. Please help me out. Consider a rod of length L and mass ‘m’ lying ...
Klyen Dave's user avatar
0 votes
2 answers
1k views

Will an off-center force cause an object to rotate if there is no resistance? [duplicate]

I am currently taking an engineering course in statics and my teacher is insisting that an off-center force will NOT cause a free object to rotate. This goes completely against my intuition. Here is ...
Peter Newell's user avatar
2 votes
2 answers
591 views

Force and Torque Question on an isolated system [duplicate]

If there's a rigid rod in space, and you give some external force perpendicular to the rod at one of the ends for a short time, what happens? Specifically: What dependence does the moment of inertia ...
chase lambert's user avatar
1 vote
2 answers
448 views

Bullet and block w/ (way) off-CG impact [duplicate]

I've recently seen a bullet (.22, vertically oriented, block rises against gravity) and block experiment on YouTube. There are two parts the first being an on CG impact and the second being an off CG ...
Paul K's user avatar
  • 11
2 votes
3 answers
230 views

torque on a body without any supporting point [duplicate]

Suppose there is a rigid body in space and one single force is acting on it and the force does not pass through the center of mass. I would like to ask why the torque on a body is always the force ...
Kelvin S's user avatar
  • 1,165
0 votes
1 answer
356 views

Off-center propulsion of space ship : Does it travel in a straight line or rotate? [duplicate]

I'm designing a space ship for a comic I'm writing. I was just finishing up the first sketch when I thought whether such a design would actually be possible. Hence my question: A spaceship is located ...
D. Verstraete's user avatar
0 votes
2 answers
278 views

if force acts on a wheel away from the centre does it have both translatory and rotatory motion? [duplicate]

if force acts on a wheel away from the centre does it have both translatory and rotatory motion?( the wheel is not fixed.) And as per my knowledge,if force acts away from the line of axis it ...
akhil's user avatar
  • 45
0 votes
3 answers
147 views

Finding instantaneous rotation and translation from multiple forces [duplicate]

I'm having trouble extrapolating torque, rotation, and such into the information I want. I'm trying to set up an estimation of a sea ship's movement for a game. The system is 2D. The ship has ...
D. G.'s user avatar
  • 3
1 vote
0 answers
34 views

Rigid body motion / rotation? [duplicate]

Let's say I have a 1 meter steel rod floating in the vacuum of deep space far from any significant gravitational force, and at rest relative to myself. Say I apply some force perpendicular to it and ...
Andrew Tomazos's user avatar
7 votes
2 answers
8k views

force applied not on the center of mass

When applying a force outside of the center of mass of the body, the body will get both linear and angular momentum. Right? Does the linear velocity from this force equal to the linear velocity from ...
user25368's user avatar
5 votes
3 answers
3k views

Motion of space ship when thrust is off-center

I have this dilemma: Suppose you have a space ship somewhere in deep space, where there is no drag force or substantial gravity. If the ship has a single engine situated in such a way that the center ...
cantrem's user avatar
  • 53
3 votes
2 answers
2k views

Force acting on an object?

You have a bar of metal in an environment with no gravity. A force is applied on one end of it. How does it rotate? There is a non-zero torque on any random point selected on the bar. For example, on ...
dfg's user avatar
  • 2,039
0 votes
1 answer
2k views

Calculating the rotational force from a linear force [closed]

I don't know what the problem is called formally (that's why I didn't find it by searching) and I am happy to be informed of another thread which is answered. When a force is exerted on an object not ...
DasEtwas's user avatar
2 votes
2 answers
896 views

Force and center of mass acceleration

https://i.sstatic.net/3w7Mt.png I have a rod with mass $m$. Above are two ways I can apply a perpendicular force to the rod. Since the mass of the rod is uniform, its center of mass is in the center ...
David Nattapong's user avatar
0 votes
0 answers
60 views

Force and Torque being applied off-center due to magnetic forces [duplicate]

Say that I have two magnetic dipoles, one of which is rigidly attached to a freely movable inflexible body at some point that is not at the body's center of mass, while the other is fixed in space. ...
Mark's user avatar
  • 281