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Newtonian mechanics discusses the movement of classical bodies under the influence of forces by applying Newton’s three laws. For more general concepts, use [classical-mechanics]. For Newton’s description of gravity, use [newtonian-gravity].

2 votes
2 answers
112 views

Can the work done by friction on the whole system be positive?

Suppose there is a plank on a smooth surface and a man is standing on one end of it. The surface of plank is rough. Now the person starts to move towards the other end with some acceleration and the p …
Sanjay's user avatar
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1 vote
1 answer
61 views

We have to find the acceleration of block of mass $m$ just after the system have been releas... [closed]

I have already solved the question and my answer is coming out to be$ g(√2/3)$ but in the answer key it is only $g/3$ by not considering the horizontal motion of the block B but due to the motion of p …
Sanjay's user avatar
  • 37