Question

11. If a body are experiences a force of 10N at an angle of 30°and moving by a displacement of 4um then
its work done is
a) 20 joule b)23 joule c) 40 joule d) none of these​

Answer 1

Explanation:

Correct option is

A

θ=60

o

Work done,

W=

F

.

S

=FScosθ

cosθ=

10×20×10

−2

1

=

2

1

θ=cos

−1

(

2

1

)=60°