A 20 Kg Mass Is Moving in a Circular Path with with a Radius

question 47

Multiple Choice

A 2.0 kg mass is moving in a circular path with a radius of 5.00 cm. The mass starts from rest and, with constant angular acceleration, obtains an angular velocity of 6.00 rad/sec in 3.00 sec. The mass then comes to a stop with constant angular acceleration in 4.00 sec. The radial component of acceleration of the mass at 5.00 sec after the start is

• A) 2.50 m/s².
• B) 2.03 m/s².
• C) 1.25 m/s².
• D) 0.980 m/s².
• E) 0.450 m/s².

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