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Q.

In the given figure, both boys are applying equal force on the box. Is it true the friction force on the box is zero?


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a

True

b

False 

answer is A.

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Detailed Solution

The above statement is true.
The frictional force is the force created when two surfaces come into contact and slide against each other. Friction is caused by irregularities on the two surfaces that come into contact. As a result, when one object moves over another, the surface irregularities become entangled, causing friction. The more the roughness, the more irregularities and the greater the friction. Both boys use the same amount of force. As a result, the net force is zero, causing no movement. So there is no friction force.
 
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