Question

An object with a m ass, m 5 kg, is released from rest at the top of the ramp. The length of the ramp is 2.3 m. The object slides down the ramp reaching a speed of 2.1 m/s at the bottom. a) If the friction force between the ramp and the object is 3 N, find the angle between the ramp and the horizontal e (in degrees). b) What speed (in m/s) does the object reach at the bottom if the ramp is friction ess

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