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Block A weight 4N and block B weighs 8N ...

Block `A` weight `4N` and block `B` weighs `8N` The coefficient of kinetic friction is 0.25 for all surfaces. Find the force `F` to slide `B` at a constant speed when (a) A rests on `B` and moves with it (b) A is held at rest and `(c)` A and `B` are connected by a light cord passing over a smooth pulley as shown in and respectively .
.

A

2N

B

3N

C

1N

D

5N

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DISHA-LAWS OF MOTION-physics
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