Question

TYPE 1: WORK DONE BY CONSTANT
FORCE
1. Ifthe unit of force and length each be increased by
four times, then the unit of energy in increased by
(1) 16 times
(2) 8 times
(3) 2 times
(4) 4 times​

Answer 1

Answer:

16 times

Explanation:

$work \: = force \times distence \\ w_{1} = f_{1} \times d_{1} \\ w_{2} = f_{2} \times d_{2} \\ f_{2} = 4 f \\ d_{2 } = 4d_{1} \\ \\ w_{2} = 16 f_{1} d_{1} \\ \frac{ w_{2}}{ w_{1} } = \frac{16}{1} \\ w_{2} = 16 \times w_{1}$