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ICSE Class 10 Physics Question 6 of 27

Solved 2023 Question Paper ICSE Class 10 Physics — Question 20

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Question

Question 2(v)

Calculate the power spent by a crane while lifting a load of mass 2000 kg, at velocity of 1.5 ms-1. (g = 10 ms-2).

Answer

Given,

mass = 2000 kg

velocity = 1.5 ms-1

weight or downward force = mg = 2000 x 10 = 20,000 N

From formula, P = F x v

P = 20,000 x 1.5 = 30,000 W = 30 kW

Hence, power spent by the crane = 30 kW.