AP Physics 1hardmcq1 pt
A 0.50 kg object moves in a circle of radius 2.0 m with a period of 2.0 s (π ≈ 3.14). Its centripetal force is about
A.9.9 N
B.3.1 N
C.1.6 N
D.20 N
Explanation
Core Concept
v = 2πr/T = 6.28 m/s; F = mv²/r = (0.50)(39.4)/2.0 ≈ 9.9 N.
Correct Answer
A9.9 N
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