A person pulls a sled across a horizontal snowy field by exerting a constant…
PHYSICS · Multi-part · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power
Problem
A person pulls a 15kg sled across a horizontal snowy field by exerting a constant horizontal force of 55N over a distance of 60m. The coefficient of kinetic friction between the sled and the snow is 0.12. Assume g=9.8ms−2 and that the sled starts from rest.
(a) Calculate the work done by the person on the sled over the 60m displacement.
(b) Determine the thermal energy generated due to friction during this displacement.
(c) Find the speed of the sled after it has been pulled the full 60m.
(d) What percentage of the work done by the person is converted into mechanical energy of the sled?