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Rolling and Using Treads to Change Friction

A block is pl...

Question

A block is placed on a rough surface. John is pushing the block with a force of 20 N, while Rob is pushing it with a force of 10 N. If the block does not move, calculate the frictional force acting on it.

A

5 N

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B

10 N

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C

15 N

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D

20 N

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Solution

The correct option is B 10 N

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