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Example 11.2 A porter lifts a luggage of 15 kg from the ground and puts it on his head 1.5 m above the ground. Calculate the work done by him on the luggage. Mass of luggage = 15 kg Height of luggage = h = 1.5 m Work done = Force × Distance Force = Weight of luggage = m × g ∴ Work done = m × g × h = 15 × 10 × 1.5 = 15 × 10 × 15/10 = 15 × 15 = 225 J Work done is 225 J

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CA Maninder Singh

CA Maninder Singh is a Chartered Accountant for the past 12 years and a teacher from the past 16 years. He teaches Science, Accounts and English at Teachoo