A 050-Kg Object Moves on a Horizontal Frictionless Circular Track with with a Radius

question 65

Multiple Choice

A 0.50-kg object moves on a horizontal frictionless circular track with a radius of 2.5 m.An external force of 3.0 N, always tangent to the track, causes the object to speed up as it goes around.If it starts from rest, then at the end of one revolution the radial component of the force of the track on it is:

• A)19 N
• B)38 N
• C)47 N
• D)75 N
• E)96 N

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