All Questions
12 questions
0
votes
1
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Disc deceleration with flexible shaft [closed]
If a disc with a large inertia is being driven at a constant speed via a flexible shaft, and a constant brake torque is applied to the end of the shaft (away from the disc), will the disc deceleration ...
- 3
0
votes
1
answer
226
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Why are the masses hanging from a pulley not considered in its moment of inertia?
My physics textbook showed a diagram of a pulley with mass with 2 blocks hanging from either side by a massless string. They calculated the moment of inertia by finding an approximation of the pulley ...
-2
votes
2
answers
1k
views
Why is a larger force needed when you decrease the distance in regards of torque? [closed]
I think it's because of inertia.
- 107
0
votes
1
answer
403
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Torque and moment of inertia with bikes
Can someboby please explain to me why it is better for a bicycle/ motor cycle to have lower center of mass when it rounds a turn.
What I could gather from the rule I = mr2
Was that the arm is shorter ...
- 1
0
votes
1
answer
75
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Walking pace and torque
How to understand the relationship between the mass of a person, the length of the legs and the walking pace? My professor tried to explain it but I didn't quite get it.
So we can consider the hips as ...
- 161
0
votes
2
answers
344
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Physics of pushing the top of a box a little bit to make it rock back and forth
Context:
I'm trying to make a simulation of a box that you can apply force to the top and it will oscillate back and forth until the energy in the system reaches equilibrium again.
Visual ...
- 111
29
votes
4
answers
8k
views
What causes a rotating object to rotate forever without external force—inertia, or something else?
Someone told me that it is not inertia, but I think it is inertia, because it will rotate forever. In my understanding, inertia is the constant motion of an object without external force. Am I wrong?
- 2,165
0
votes
2
answers
108
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Isn't inertia experience by person in moving bus same as torque
When a bus moves suddenly, the person standing in it tilts backwards. This concept is explained using inertia(tendency of body to resist change in its state of motion) but when the bus moves suddenly, ...
- 307
6
votes
2
answers
5k
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How to find the axis with minimum moment of inertia?
If a system of particles is given, in a 2D plane, with particles having masses $M_1$, $M_2$, $M_3, \ldots M_n$ and coordinates $(x_1,y_1)$, $(x_2,y_2)$, $(x_3,y_3), \ldots (x_n y_n)$,
then how can one ...
4
votes
1
answer
5k
views
What is the meaning of "moment"?
What is the meaning of moment? I'm little confused about the word as there are some terms like moment of momentum, moment of mass, moment of force, etc. I want to know what exactly is meant by the ...
- 63
3
votes
3
answers
6k
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How does a wheelie work?
So I've been trying to create a mathematical model for an electric motorcycle and began to wonder about the maximum possible torque that could be supplied to the rear driven wheel without having the ...
- 55
2
votes
2
answers
591
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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 ...
