Recent content by orlan2r

AlreadyI did it. Only I wish to know the opinion of a specialist. Could you propose this problem on other forum please. I can`t believe that nobody can propuse a solution. Thanks

This problem I have created myself. Who do you think could help me?

Someone who can help me in this challenge problem?

Can you help me sophiecentaur?

Conservation of momentum on the x-axis and conservation of energy (2 equations but three unknown speeds)

NO more equation is needed

Its not easy. Please try it to solve

The figure shows a system consisting of two identical spheres of mass m and a mobile platform mass M. If the system starts from rest in the position shown in the figure, what is the speed from each sphere in the moment when both move horizontally, before the crash occurs. Neglect all friction.

The problem referred by AlephZero is simliar but is purely mathematical. I propuse a physics brain teaser. In this case we can say the snail's movement respect to the Earth result of composition of movements: their own movement respect of the elastic band and the movement of the point of the...

Imagine an infinitely stretchable elastic band where one end is attached to a vertical wall and the other on a horse, as shown in figure. On the elastic band, very close to the wall, there is a snail. If we assume that the initial length of the band is L, and the horse and snail start moving...

Thanks haruspex. Then we could say that the buoyant force is a "conservative force" and therefore we could associate to this a energy potential?

I've resolved thus. I've using a concept called "energy potencial of pression" which is equal to pression of center gravity of body multiply for volumen of the body. Could you verify my calculation please.

Right haruspex.:smile: Could help me in that (calculation)

The level of the surface of water is constant and at beginning the hemisphere whole is inside of the water.

You're right rude man. Density of body < density of water. Initially the force F points down to keep submerged hemisphere. I hope this image can help to unterstand better this problem.