A particle moves along a straight path through displacement i = (2.2 m) + c while force = (3.2 N) - (3.8 N) acts on it. (Other forces also act on the particle.) What is the value of c if the work done by on the particle is (a) zero, (b) 3.2 J, and (c) -7.3 J?

Question

A particle moves along a straight path through displacement i = (2.2 m) + c while force  = (3.2 N) - (3.8 N) acts on it. (Other forces also act on the particle.) What is the value of c if the work done by  on the particle is (a) zero, (b) 3.2 J, and (c) -7.3 J?

bobpursley · Answer

I assume you have vector displacement andforces. work=force dot displacement=3.2*2.2-3.8*c solve for c.I will do one. If work 7.3J 7.3=7.04-3.8c .26=3.8c c=14.6