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Chrismartin33
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Homework Statement
A car of mass m accelerates from speed v1 to speed v2 while going up a slope that makes an angle θ with the horizontal. The coefficient of static friction is μs, and the acceleration due to gravity is g.
Find the total work W done on the car by the external forces.
Homework Equations
Wnet = .5mv22 - .5mv12
W=F*d
W=|F|*|d|*cos(theta)
d=displacement
The Attempt at a Solution
The question actually does say it gives me static friction, not sure how that works since it's a kinetic energy question and must be in motion.
I know the motion is up a ramp, but not quite comprehending how the angle (theta) will affect the various components in this work-energy example.
Answer is algebraic, in terms of any of the following: [v1,v2,(theta),us,g]
Please help!
Edit: I do know that Fnet = deltaK/d as well. Not sure if that helps me though.