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Problem 6.21 A 5000kg truck is parked on a 12? slope. Part A How big is the friction...

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Physics

Problem 6.21

A 5000kg truck is parked on a 12? slope.

Part A

How big is the friction force on the truck? The coefficient ofstatic friction between the tires and the road is 0.90.

Answer & Explanation Solved by verified expert
4.5 Ratings (586 Votes)

Force along the slope = mg sin ?

                                                = 5000* 9.8* sin 12

                                                = 10187.6 N

Frictional force = ? N = ? mg cos ? = 0.9 *5000*9.8*cos 12

                                                                = 43136 N

Frictional force is never greater than action force

So, frictanal force = 10187.6 N
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