Question

A force
r
F = ( i + j
$ $ 3 4 ) N acts on a body and produces a displacement
r
a = ( +
$ $ 2i 5 j ) m. Calculate the (i) magnitude of the force and (ii) work
done by the force.

Answer 1

Answer:

Explanation:bhai 5 points me sab le leogo ge

Answer 2

Answer:

F = 5 N, W= 26 joules

Explanation:

since force F = 3i + 4j

magnitude of force = √( 3²+4²) = 5N

displacement S = 2i+5j

work done = F.S = 3×2+4×5 = 6+20 = 26 joules

therefore F = 5 N,. W = 26 J

hope this helps you