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Q.

Two iron blocks of 1 kg and 2 kg masses are kept on a cemented floor. Is it true that the  2 kg block will require more force to move it from the rest position than the 1 kg block?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
The heavier block will require more force to move because the force of friction grows with the mass of the object. Therefore, moving the second block from its rest position would need a bigger force. As a result, the friction force on the second block will be greater. As a result, moving the heavier block from its rest position will require more force.
 
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