posted by anonymous .
If a pulley is 57% efficient and you lift a 35kg box 5m how much work do you do?
A crane that is 13m long and is at a 20 degree angle to the ground can hold a load of 296N. What is the torque on the crane?
A cylinder with a radius of 1.3m has a mass hanging from it with a weight on 13 N. When the weight is released it causes an angular acceleration of 9rad/s^2. What is the moment of inertia for the cylinder?
work done by you * .57=35*g*5
Torque= I * angular acceleration
use this to solve the third.