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Assertion: Pulling a lawn roller is easi...

Assertion: Pulling a lawn roller is easier than pushing it.
reason: Pulling increases the apparent weight and hence the force of friction.

A

If both assertion and reason are ture and reason is the correct explanation of assertion.

B

If both assertion and reason are ture but reason is not the correct explanation of assertion.

C

If assertion is ture but reason is false.

D

If both assertion and reason are false.

Text Solution

Verified by Experts

The correct Answer is:
A
Suppose the roller is pushed as in figure (b). The force `F` is resolved into two components, horizontal components `F_(H)` which helps the roller to move forward, and the vertical component acting downwards adds to the weight. Thus weight is increased. But in the case of pull [fig(a)] the vertical component is opposite to its weight. Thus weight is reduced. So pulling is easier than pushing the lawn roller.
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Knowledge Check

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