Question

Two constant forces f1 and f2 acts on a body of mass 8 kg these forces displace body from point p (1,-2,3) to q (2,3,7) force f1 is of magnitude 9N and is acting along vector (2i-2j+k). Find work done by f2

Answer 1

Two constant forces (vectors) F1=2i-3j+3k and F2=i+j-2k act on a body and displace it from position a=i+2j-2k to the position b=7i+10j+5k.

What is the work done on the body?

Note: a and b are positions in coordinates and in vector form