Physics-
General
Easy
Question
Block A weighing 100 kg rests on a block B and is tied with a horizontal string to the wall at C. Block B weighs 200 kg. The coefficient of friction between A and B is 0.25 and between B and the surface is 1/3. The horizontal force P necessary to move the block B should be 
- 1150 N
- 1250 N
- 1300 N
- 1420 N
The correct answer is: 1250 N
Friction between block A and block B & between block B and surface will oppose the P
=1250 N
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