Question

Q1.A load of mass 100 kilograms is pulled up by 5.0 metre. Calculate the work done.

By taking g = 9.8 m/s².​

Answer 1

Explanation:

✬ Work Done = 4900 J ✬

Explanation:

Given:

Mass of load is 100 kg.

Height or distance is 5 m.

Acceleration due to gravity is 9.8 m/s².

To Find:

How much work is done ?

Formula to be used:

W = mgh

Solution: Here we have

m = 100 kg

h = 5 m

g = 9.8 m/s²

Substituting the values on formula

⟹ W = mgh

⟹ W = 100 × 9.8 × 5

⟹ W = 980 × 5

⟹ W = 4900 J

Hence, work done is 4900 joules.

Work is said to be done if a body moves through a certain distance under the application of a force.

SI unit of work done is joule.

Answer 2

Answer:

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