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dominus96
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Kinetic Energy with diagram!
In the figure below, a small block is sent through point A with a speed of 7.5 m/s. Its path is without friction until it reaches the section of length L = 12 m, where the coefficient of kinetic friction is 0.70. The indicated heights are h1 = 6.5 m and h2 = 1.6 m.
(a) What is the speed of the block at point B?
(b) What is the speed of the block at point C?
K=.5(mv^2)
U=mgh
F=ma
Friction force=mu*force normal
First off, ignore the friction stuff because I already got those. I just need help with the 2 specific questions I listed. For a I did K=U so I set .5v^2=gh since the masses cancel out. But I got velocity and it was wrong...
Homework Statement
In the figure below, a small block is sent through point A with a speed of 7.5 m/s. Its path is without friction until it reaches the section of length L = 12 m, where the coefficient of kinetic friction is 0.70. The indicated heights are h1 = 6.5 m and h2 = 1.6 m.
(a) What is the speed of the block at point B?
(b) What is the speed of the block at point C?
Homework Equations
K=.5(mv^2)
U=mgh
F=ma
Friction force=mu*force normal
The Attempt at a Solution
First off, ignore the friction stuff because I already got those. I just need help with the 2 specific questions I listed. For a I did K=U so I set .5v^2=gh since the masses cancel out. But I got velocity and it was wrong...