A lift can hold 2000 kg, friction is 4000 N and power provided is 60 H

1.	A lift can hold 2000 kg, friction is 4000 N and power provided is 60 HP. (1 HP = 746 W) Find the maximum speed with which lift can move up.(1) 1.9 m/s (2) 1.7 m/s (3) 2 m/s (4) 1.5 m/s
Answer» Answer is (1) 4000 × V + mg × V = P {60 x 7446}/{4000 + 20000} = V V = 1.86 m/s ≈ 1.9 m/s

A lift can hold 2000 kg, friction is 4000 N and power provided is 60 HP. (1 HP = 746 W) Find the maximum speed with which lift can move up.(1) 1.9 m/s (2) 1.7 m/s (3) 2 m/s (4) 1.5 m/s

Answer»

Answer is (1)

4000 × V + mg × V = P

{60 x 7446}/{4000 + 20000} = V

V = 1.86 m/s ≈ 1.9 m/s

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A lift can hold 2000 kg, friction is 4000 N and power provided is 60 HP. (1 HP = 746 W) Find the maximum speed with which lift can move up.(1) 1.9 m/s (2) 1.7 m/s (3) 2 m/s (4) 1.5 m/s

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