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Work Done When Force Is Varying

A man weighin...

Question

A man weighing 70 kg carries a weight of 10 kg to top of a tower 100 m high. Calculate the work done by the man

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Solution

The work done by the man is in termns of the potential energy change.

The change in the potential energy is given as:
$w = m g Δ h$

Substitute the values in above formula:
$w = 800 \times 9.8 \times 100$

$= 7.84 \times 10^{5} J$

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Work Done When Force Is Varying

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