Question

A porter lifts a luggage of 15kg from the ground and puts it on his head 1.5 m above the ground. Calculate the work done by the earth on the luggage

Answer 1

Work done by the porter on the luggage = Force x displacement

                                                                    = mgh

                                                                     = 15 kg x (9.8 m/s2) x 1.5 m

                                                                      = 220.5 J

Answer 2

Solution-

Given,

• F = 7 N
• s = 1.5 m

We known that,

Work = Force × Distance

= 7 N × 1.5 m

= 10.5 J

∴ The work done by the porter on the luggage is 10.5 J

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