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A gardener pushes a lawn roller through ...

A gardener pushes a lawn roller through a distance of 20 m. If he applies a force of 20 kg wt in a direction inclined at `60^(@)` to the ground , find the work

A

1960 J

B

196 J

C

1.96 J

D

196 kJ

Text Solution

Verified by Experts

The correct Answer is:
A
(a) Given, F=20 kg-wt`=20xx9.8` N and s=20 m
`:.` work done =F s cos `theta`
`=20xx9.8xx20xx cos 60^(@)=1960 J`
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Knowledge Check

  • A gradener pushes a lawn roller through a distance 20 m. If he applies a force of 20 kg-wt in a direction inclined at 60^(@) to the ground, the work done by him is

    A
    1960 J
    B
    196 J
    C
    1.96 J
    D
    196 kJ

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    A
    1960 J
    B
    196J
    C
    1.96J
    D
    196 kJ

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    A
    `10^(5) J`
    B
    `10^(4) J`
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    `10^(6) J`
    D
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