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A 0.200 kg ball starting from rest rolls down an inclined plane with θ=30°. a)Find the acceleration...

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Physics

A 0.200 kg ball starting from rest rolls down an inclined planewith θ=30°.

a)Find the acceleration of the ball, and the magnitude of normalforce exerted by the plane.

b) If it starts from rest a height h = 30.0 cm above itsposition at the bottom of the incline (measured between the centerof the ball at each position), what is the speed of the ball vf atthat bottom point, and how long did it take to get there?

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