A crane can lift up 10000kg of coal in 1hour from a mine of 180m depth

1.	A crane can lift up 10000kg of coal in 1hour from a mine of 180m depth. If the efficiency of the crane is 80%,its input power must be (take g=10ms)
Answer» ANSWER: approx 6000 kgm^2/s^3. Explanation: 1. OUTPUT power = mgh/t = (10000×9.8×180)/3600 2. INPUT power = X 3. output power =( 80/100 )x x = approx 6000.

A crane can lift up 10000kg of coal in 1hour from a mine of 180m depth. If the efficiency of the crane is 80%,its input power must be (take g=10ms)

Answer»

ANSWER:

approx 6000 kgm^2/s^3.

Explanation:

1. OUTPUT power = mgh/t

= (10000×9.8×180)/3600

2. INPUT power = X

3. output power =( 80/100 )x

x = approx 6000.

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A crane can lift up 10000kg of coal in 1hour from a mine of 180m depth. If the efficiency of the crane is 80%,its input power must be (take g=10ms)

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