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0 votes
1 answer
174 views

Inertia of an elevator

Imagine a situation where we have a relatively light empty elevator moving up at a pretty high constant velocity say something above $10\ m/s$, just so that it has a considerable amount of momentum ...
Krishnaraj PT's user avatar
12 votes
1 answer
6k views

How does this magnetic toy work?

A nephew of mine has this toy called "Gravitrax". It is basically a track building kit - you can build various tracks for iron balls which go through the track thanks to gravity. However, there is ...
vojta's user avatar
  • 275
1 vote
5 answers
473 views

Calculating relative distance covered

Two balls 'A' and 'B' are thrown vertically upwards with the same velocity. The mass of A is greater than that of B. We need to find which of the balls reaches a greater height (assuming the effect of ...
HDatta's user avatar
  • 15