Question

10. The force on a particle varies as F =9 /X2 The work
done in displacing the particle from x= 1 to x=3 is-
(1) 4J
(2) 3J
(3) 5J
(4) 6J
​

Answer 1

Answer:

answer is 3J

Explanation:

when u integrate u will get the answer

integral 9x^-2 dx

u will get 9/2x

wjen u put the limits u will get 9/2(3)-9/2(1)

9/6-9/2

9(1/6-1/2)

9(2-6/12)

9(4/12)

3j