Question

4.
Find the work done for a displacement of 4 m
from the following grapher
Force (N)
N
3
x(m)
-1
st
1) 0.5 J
3) 3.0 J
2) 1.0 J
4) 3.5 J​

Answer 1

Answer:

Work done in stretching a spring=∫F.dx= Area under the curve.

Hence in moving from x=0.2m to x=0.3m, the work done is equal to the area of the trapezium present below.

Hence W=

2

1

×(1+2)×0.1J=0.15J