- #1
Aleoa
- 128
- 5
Homework Statement
This problem comes from the Feynman Lectures. However, the author doesn't explain in detail the procedure to solve the problem.
I have to calculate the weight W using only the law of energy conservation.
Homework Equations
In the second picture W it is lowered of 5 units.
The known weight block is 1 lb.
How can I solve this problem and why ?
In order to apply conservation of energy do I have to assume some properties of this system we are studying?
Thank so much