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Kinetic energy of a block sliding down a ramp
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[QUOTE="CWatters, post: 4287697, member: 423469"] I've only briefly scanned your solution but this is the way I would do it.. Write an equation for the net force down the slope. That will accelerate the block according to Newtons f=ma Should have something like... ma = (component due to weigh) - (friction) ma = mgsin(20)-μmgcos(20) m cancels leaving an equation for a. Then apply one of the standard equations of motion and solve for initial velocity. .. V^2 = U^2 +2as [/QUOTE]
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Kinetic energy of a block sliding down a ramp
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