A weightless rope is draped over a frictionless pully attached to the ceiling (change of direction only, no mechanical advantage). Attached to one end of the rope is a 5 kg weight sitting in the floor. A 5 kg monkey grabs the other end of the rope and begins to pull down on the rope.
a) the monkey rise off the floor,
b) the 5 kg weight rise up off the floor, or
c) both the monkey and the weight rise off the floor at the same rate.
This is a question from a mechanics section of the high school physics book i had in the early 60's (algebra & trig, no calc). Since this question has stuck with me all these years, i would appreciate a pointer to what concept or equations i should consider.
The Attempt at a Solution
thanks in advance