All Questions
23
questions
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 ...
- 395
1
vote
3
answers
140
views
How high do the balls on a Centrifugal Governor lift?
Suppose you have one of these Centrifugal Governours
or a similar object. How to calculate the height that these balls have when the construct is spinning at a given speed?
- 33
0
votes
1
answer
51
views
Force applied on edge of a cylinder due to water
We take a horizontal cylinder of length $L$ and fill it with incompressible water of mass $m$ and close the two ends with lids. If we start rotating the cylinder with respect to one of the ends,the ...
- 361
0
votes
1
answer
337
views
"Centrifugal Force" felt in a turning car
From my understanding, when you are in a turning car, assuming that you are not touching any part of the car except the seat, the frictional force from the seat is acting as the centripetal force. Is ...
2
votes
2
answers
136
views
If one "fell" from the center of a spinning space station, which was creating "gravity" by using centripetal force, what forces would one feel?
Let's imagine a grand hamster wheel in space. The wheel is very large and is constructed of the same reasonably inelastic material. It has three main features: The first is a solid disk rotating at ...
- 23
0
votes
2
answers
277
views
Centripetal acceleration in rotational and translational motion
How do you find the centripetal acceleration of any point on a body performing both rotational and translational motion.
For example, in pure rolling if we find centripetal acceleration of the topmost ...
- 3
4
votes
3
answers
993
views
Centrifugal force effect in a rotating frame of reference
If the centrepital force doesn't exist in a rotating frame of reference, then in this frame perspective, how can we explain why a ball tied to a string following a circular motion not to be pushed ...
- 113
2
votes
8
answers
213
views
Centrifugal Force: Why is it so real even from non-inertial frame? [closed]
I have thought about this for quite an amount of time. The questions:
(1) Suppose we tie a ball on a merry go round with a string. Now, we observe the ball from the merry go round and from the ground. ...
0
votes
2
answers
48
views
Does the centrifugal force of a rotating object acts at this same rotating object?
when rotating an object by a string a centripetal force from the string will act at the object towards the center and by Newton's 3rd law an opposite force will act at the string by the object . Then ...
- 113
0
votes
2
answers
390
views
Why is there no centripetal force acting on a vehicle while taking a turn in unbacked roads?
Can someone help me in understanding why there is no centripetal force acting on a vehicle while taking a turn?
Basically, my physics teacher used a non-inertial frame where the frame was at the ...
- 11
2
votes
1
answer
451
views
Why a rotating ball (at the end of a rope) does not fall down?
Is the explanation shown in the diagram right?
This is: the net force F1 = tangential + tension is way much bigger than the weight of the ball and, therefore, the resulting force F1 + weight is F1 so ...
- 191
2
votes
2
answers
532
views
How to explain the Earth's Equatorial bulge without centrifugal force?
There are many answers to the question why is the Earth bulged at the equator, see e.g. here, but almost all of them involve centrifugal force. Since it's a fictitious force, how to we explain this ...
- 307
0
votes
2
answers
1k
views
Is gravity the Earth's centripetal acceleration? Should the gravitational acceleration be equal to the centripetal acceleration at the equator?
I understand that different forces can act as centripetal forces (shear, tension of a string etc) but in the case of the rotating earth, is it really the gravitational force the centripetal force that ...
- 155
1
vote
2
answers
269
views
Rotating rope with a ring
I have this ideal system. There is a bar with negligible mass and a ring(a point) with mass $m$. Bar is rotating with angular speed $\omega$.
If I see that system from Non-inertial reference system I ...
- 27
1
vote
1
answer
380
views
Why people feel outward force in rotor ride?
I know centrifugal is fictious force but what is possible reason for the force that people feel in rotor ride outwards.
The reason for people not falling down is friction force which is in vertical ...
- 129