Question

13.
The relationship between force and position is
shown in fig. (in one dimensional case). The work
done by the force in displacing a body from
x = 1 cm to x = 5 cm is-
20
Force in Dynes
1 2
3
4
5
6
7
8
+Xin (cm)
(1) 20 ergs
(3) 70 ergs
(2) 60 ergs
(4) 700 ergs​

Answer 1

Answer:

20 ergs and option is 1

Explanation:

work done in force vs displacement graph is area under the graph

from x=1 to x=2

10×1 = 10

from x=2 to x=3

20×1 = 20

from x=3 to x=4

(-20)×1 = -20

from x=4 to x=5

10×1=10

adding all these we get totl work done from x=1 to x=5

10+20-20+10 = 20

option is 1