
AP Physics C Unit 3 Work and Kinetic Energy
An 8.0 kg crate is pulled 5.0 m up a 30 degree incline by a rope angled 18 degrees above the incline. The tension in the rope is 120 N, and the crate's coefficient of kinetic friction on the incline is 0.25. a. How much work is done by tension, by gravity, and by the normal force? b. What is the increasing in thermal energy of the crate and incline?