First slide

Elastic Modulie

Question

When load of 5 kg is hung on a wire then extension of 3 m takes place, then work done will be

Moderate

A

75 joule
B

60 joule
C

50 joule
D

100 joule

Solution

$W = \frac{1}{2} F l = \frac{1}{2} \times Mg \times l = \frac{1}{2} \times 5 \times 10 \times 3 = 75 J$

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