Question

A coolie is holding a bag on his head by applying force of 25N. He moves forward and covers the horizontal distance of 400cm and then he climbs up and covers the vertical distance of 600cm. What will be work done by him?​

Answer 1

Answer:

250 joules

Explanation:

1. The force applied by coolie is 25 newtons.
2. The distance covered by coolie is 400 cm and 600 cm, which when added, is 1000 cm
3. Since the SI unit of length is metres, in calculation we use metres. but the answer we got is in centimetres. We should convert it into metres. So 1000 cm = 10 metres.

Now let's write the actual complete solution with statements -

1. Force applied by coolie = 25 newtons
2. Distance covered by coolie = 10 metres
3. Work done by coolie -

Work = Force x Distance

Work = 25N x 10m

Work = 250 **joules

** joules is the standard unit of work

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