- #1
Rumplestiltskin
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- 3
Homework Statement
The carriage and its passengers start at rest at A. At B, the bottom of the ride, the maximum speed of the carriage is 20ms-1. The vertical distance between A and B is 110m. The length of the track between A and B is 510m. The mass of the carriage and the passengers is 4000kg.
By considering the energy changes from A to B, determine the average frictional force acting on the carriage.
Homework Equations
The Attempt at a Solution
GPE at A = mgh = 4000 * 9.81 * 110 = 4316400 J
KE at B = 0.5 * 4000 * 202 = 800000 J
4316400 - 800000 = 3516400 J work done.
W = Fx. 3516400 = F * 510
F = 6900 N?