- #1
Graphire
- 1
- 0
Homework Statement
A massless string runs around two massless, frictionless pulleys, as shown in the figure below. An object with mass m = 10.3 kg hangs from one pulley. A force F is exerted on the free end of the string. What is the magnitude of the force F if the object is lifted at a constant speed?
Homework Equations
I'm guessing around 1/2m x v^2 but I really don't have a clue...
The Attempt at a Solution
Well so far I got that the force goes in the y-axis so that he factors involving the y-axis is the weight and tension. Since the question does not give me tension and I really don't know what formula to use to figure it out I'm quite lost.
There's also a diagram but I don't know how to put it up here...