All Questions
4
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Why both 'Newton's Second law' and 'Conservation of Energy' applied to the same problem lead to two distinct answers?
A block of mass 'm' is attached to one end of a string and a floor-fixed spring with spring constant 'k' is attached to the other. The string goes over a frictionless pulley. Initially, the spring is ...
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To find the angle of slipping of a falling coin
In an attempt to predict the outcome of a toss, I dropped a coin with its edge just touching another sharp edge as shown in figure. (The edge is flat and sharp with very less friction as in case of a ...
- 2,000
1
vote
2
answers
120
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Need proper interpretation of imploding/exploding self-gravitating sphere
While searching for some nice and simple problems in Newton's theory of gravity, I've made this trivial calculation for which a proper physical interpretation is lacking. Some pieces are missing and ...
- 7,592
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A central force which enables a torque on a sphere - is it still conservative?
Consider the following example:
Two spheres (one big, other small) standing vertically on ground.
At first, the small sphere is on top of the big sphere.
Then, it starts to roll w/o slipping to ...
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