10-4=5=6 a. A car traveling on a flat (unbanked), circular track accelerates uniformly from rest with a...

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Physics

10-4=5=6
a. A car traveling on a flat (unbanked), circular trackaccelerates uniformly from rest with a tangential acceleration of2.10 m/s². The car makes it one quarter of the wayaround the circle before it skids off the track. From these data,determine the coefficient of static friction between the car andtrack.
b.A 250-kg merry-go-round in the shape of a uniform, solid,horizontal disk of radius 1.50 m is set in motion by wrapping arope about the rim of the disk and pulling on the rope. Whatconstant force would have to be exerted on the rope to bring themerry-go-round from rest to an angular speed of 0.400 rev/s in 2.00s? (State the magnitude of the force.)
c. AÂ Â potter's wheelâ€”a thick stone disk of radius0.500 m and mass 110 kgâ€”is freely rotating at 50.0 rev/min. Thepotter can stop the wheel in 6.00 s by pressing a wet rag againstthe rim and exerting a radially inward force of 73.0 N. Find theeffective coefficient of kinetic friction between the wheel andrag.

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4.3 Ratings (762 Votes)

In order to find the coefficient of static friction we mustexamine the force of friction at the slipping point where Ff sFN smg We dont know the mass of the car but hopefully it willcancel out somewhere along the way The only force on the car thatis not completely in the See Answer

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