- #1
debrickshaw
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Homework Statement
A Block of mass (m) slides down a plank of length (s) from a height (h) down to the ground. The friction between the plank and the block is uk. Derive and expression for the total work done by the force of friction done by force of friction on the block
Homework Equations
W=Fd
F=W/d
d=W/F
Wtotal=1/2 mv^2
The Attempt at a Solution
at top PE = M=mgh
honestly I've been staring at this damn problem for a half an hour and that's all I've got, any help would be very appreciated