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gaobo9109
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Homework Statement
A cord is attached to a cart that can slide along a frictionless horizontal rail aligned along an x-axis. The left end of the cord is pulled over a pulley, located at height h = 1.2m. There is negligible frictional force. The cart slides from x1=3.00m to x2=1.00m. During the move, the tension in the cord is a constant 25.0N. What is the change in kinetic energy of the cart during the move
Homework Equations
The Attempt at a Solution
My approach to the question is as follow:
Since tension is constant, the horizontal component of T will decrease as the angle T makes with the horizontal increases. So I need to form an expression for horizontal component of T in term of h and x. But I don't know how to form this equation.
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