A pump is required to lift 1000 kg of water per minute from a well 20

1.	A pump is required to lift 1000 kg of water per minute from a well 20 m deep and eject it at a rate of 20 m/s. (x) How much work is done in ejecting water? (y) How much work is done in lifting water? (z) What HP (horse power) engine is required for the purpose of lifting water? (1) 2 ×105 jmin (2) 4 ×105 jmin (3) 3 ×105 jmin (4) 6.6 ×103 js (5) 8 ×104 watts (6)105 watts Take g = 10ms2
Answer» A pump is required to lift 1000 kg of water per minute from a well 20 m deep and eject it at a rate of 20 m/s. (x) How much work is done in ejecting water? (y) How much work is done in lifting water? (z) What HP (horse power) engine is required for the purpose of lifting water? (1) 2 $\times$ $10^{5}$ $\frac{j}{m i n}$ (2) 4 $\times$ $10^{5}$ $\frac{j}{m i n}$ (3) 3 $\times$ $10^{5}$ $\frac{j}{m i n}$ (4) 6.6 $\times$ $10^{3}$ $\frac{j}{s}$ (5) 8 $\times$ $10^{4}$ watts (6) $10^{5}$ watts Take g = $\frac{10 m}{s^{2}}$

A pump is required to lift 1000 kg of water per minute from a well 20 m deep and eject it at a rate of 20 m/s. (x) How much work is done in ejecting water? (y) How much work is done in lifting water? (z) What HP (horse power) engine is required for the purpose of lifting water? (1) 2 ×105 jmin (2) 4 ×105 jmin (3) 3 ×105 jmin (4) 6.6 ×103 js (5) 8 ×104 watts (6)105 watts Take g = 10ms2

Answer»

A pump is required to lift 1000 kg of water per minute from a well 20 m deep and eject it at a rate of 20 m/s.

(x) How much work is done in ejecting water?

(y) How much work is done in lifting water?

(z) What HP (horse power) engine is required for the purpose of lifting water?

(1) 2 $\times$ $10^{5}$ $\frac{j}{m i n}$ (2) 4 $\times$ $10^{5}$ $\frac{j}{m i n}$ (3) 3 $\times$ $10^{5}$ $\frac{j}{m i n}$

(4) 6.6 $\times$ $10^{3}$ $\frac{j}{s}$ (5) 8 $\times$ $10^{4}$ watts (6) $10^{5}$ watts

Take g = $\frac{10 m}{s^{2}}$

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