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1021 a) Calculate the power of the pump which can lift 100 kg of water to store in a water tank atthe height of 19 m in 25 sec. (take the value of g-10 m/sb) Describe two methods used to reduce the friction between two surfaces3+2) |
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Answer» m= 100kgg= 10 m/s²t = 25swork done = mghW = 100 X 10 X 19Work done = 19000 JP = Work done/time takenPower = 19000/25Therefore, power = 760 W |
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