AP Physics 1mediummcq1 pt
A 2.0 kg rock swings on a 1.5 m string in a vertical circle at 5.0 m/s. At the bottom (g = 10 m/s²), the tension is about
A.53 N
B.33 N
C.13 N
D.20 N
Explanation
Core Concept
T − mg = mv²/r: T = (2.0)(25)/1.5 + 20 = 33.3 + 20 ≈ 53 N.
Correct Answer
A53 N
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