All Questions
9
questions
0
votes
0
answers
52
views
Gravity, orbiting bodies and Newton’s second law of motion [duplicate]
As I understand it an object travelling in a circular motion is undergoing a centripetal ‘force’. As Newton’s second law of motion, put in simple terms states that a moving object will tend to ...
- 719
1
vote
1
answer
136
views
Conceptual Question: What would happen to satellites orbiting the earth if mass of earth suddenly increases? [closed]
Would the satellite crash onto the earth? If so, why, and in what kind of motion? A spiral motion sounds intuitive, but why?
Or there is another possibility: will the satellite continue to execute ...
- 45
0
votes
2
answers
2k
views
What balances out the Normal force in this scenario of uniform circular motion?
In my Physics course we are dealing with uniform circular motion. In this scenario there is an object in horizontal uniform circular motion.
In the FBD provided in the problem the gravitational force ...
- 137
-1
votes
1
answer
353
views
For an object in a rotating cylinder, is the normal force on that object equal to the centripetal force?
There is a vertical cylinder, an object is glued to the wall (verticle) of that cylinder. The cylinder starts rotating. Is the normal force, in this scenario, the centripetal force?
I ask this ...
- 3
3
votes
1
answer
752
views
Is the normal force smaller than gravitational force due to earth's rotation? [duplicate]
In physics class we learn that the normal or contact force exactly equals the force of earth's gravity pulling you to the center of the Earth and thus cancel each other out. I thought that the normal ...
1
vote
1
answer
243
views
Is gravity really indistinguishably from centripetal acceleration?
I know that gravity and linear acceleration are indistinguishable. I.e., if I am put in a closed box I would not be able to tell the difference between the box staying on earth and the box travelling ...
- 279
3
votes
1
answer
148
views
Forces acting on a spinning moon base
Apologies if this is the wrong SE site, this came up and my highschool physics was 30 odd years ago.
So, lets say I have built a working ring space station with spin to give the effect of 1g ...
- 133
1
vote
2
answers
306
views
How to start an artificial gravity?
I understand how artificial gravity in space stations works. It is by normal force the wall exerts on the foot.
But I wonder how to start it in the first place. I just learned about centrifugation ...
- 1,361
0
votes
2
answers
231
views
What happens to an orbiting body moving with the Earth's angular speed at various altitudes?
I was learning about inertial frames amongst other things, and I somehow came up with this question. Imagine we have a pole, made of imaginary very strong material that will never bend, placed at the ...
- 6,896