Question

A body is constrained to move along x,y and z axis coordinate system and subject to a constraines force= (2î+4j+6k)N. What is the work done by the force of moving the body over a distance of (3î+5j+6k)M along x,y and z axist?

Answer 1

Answer:

62J

Explanation:

F=(2i+4j+6k)

s=(3i+5j+6k)

w=F.S

2i.3i=6( |i.i|=1)

also i.j=i.k=j.k=0(@=90) therefore cos@=0

therefore

w=6+20+36

62J