Question

Find the efficiency of a machine
if the input work is 150 J and the output work is 90 J.

Answer 1

Answer:

Work input = 150 J

Work output = 90 J

η = Efficiency

Wo = Work output

Wi = Work input

Explanation:

η = (Wo/Wi × 100) %

=> η = (Wo/Wi × 100)%

=> η = (90/150 × 100)%

=> η = (0.6× 100)%

=> η = 60%