A body is mass 300 kg is moved through 1...

A body is mass `300 kg` is moved through `10 m` along a smooth inclined plane of inclination angle `30^@`. The work done in moving (in joules) is `(g = 9.8 ms^(-2))`.

4900

9800

14700

2450

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The correct Answer is:

(d) We know that,
`W=mg cos theta xxs`
`W=300xx9.8xxcos30^(@)xx10`
`=300xx9.8xx(sqrt3)/(2)xx10=2450J`

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