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It is easier to pull a lawn roller than ...

It is easier to pull a lawn roller than to push it because pulling .

A

involves sliding friction

B

involves dry friction

C

increases the effective weight

D

decreases normal reaction

Text Solution

Verified by Experts

The correct Answer is:
D
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Knowledge Check

  • STATEMENT-1: It is easier to pull a heavy object than to push it on a level ground and STATEMENT-2: The magnitude of frictional force depends on the nature of the two surfaces in contact.

    A
    (a) Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1
    B
    (b) Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explaination for Statement-1
    C
    (c) Statement-1 is True, Statement-2 is False
    D
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  • It is easier to walk on road than on hardened ice because

    A
    traffic on roads is regulated
    B
    the shoe companies are not efficient in making shoef fit for walking on ice
    C
    people are accustomed to walking on road
    D
    there is less friction on ice

  • 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.

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