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JerJason
 3 years ago
A wet bar of soap slides freely down a ramp 8.5m long inclined at 8.0 degrees. How long does it take to reach the bottom? Assume kinetic friction is .50.
JerJason
 3 years ago
A wet bar of soap slides freely down a ramp 8.5m long inclined at 8.0 degrees. How long does it take to reach the bottom? Assume kinetic friction is .50.

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hosein
 3 years ago
Best ResponseYou've already chosen the best response.1Hi \[mgsin \theta\mu _{k}mg \cos \theta=ma \rightarrow a=g(\sin \theta\mu _{k} \cos \theta)\]so use this to find time of motion:\[x=(1/2)at^2\rightarrow t=\sqrt{2x/a}\] where "x"is length of ramp

JerJason
 3 years ago
Best ResponseYou've already chosen the best response.0oh wow, I had the above formula correct, I just needed that second formula. Thanks.
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