ACT Science Practice Question #1486 (Medium (30)) | Test Citadel
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ACT Science Difficulty: Medium (30)

Digital ACT Science Practice Question #1486

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Physics students measured the period T of a pendulum while varying string length L and bob mass M: Experiment 1 (M = 100 g fixed): - L = 0.25 m: T = 1.00 s - L = 1.00 m: T = 2.01 s - L = 2.25 m: T = 3.02 s Experiment 2 (L = 1.00 m fixed): - M = 50 g: T = 2.01 s - M = 100 g: T = 2.00 s - M = 200 g: T = 2.01 s Which conclusion is best supported by the experimental results?
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Exp 2 proves mass has zero effect; quadrupling length doubles period.

Masterclass Solution & Distractor Trap Analysis

In Exp 2, period is unchanged (~2.01s) when mass changes. In Exp 1, quadrupling L doubles T, showing T is proportional to sqrt(L)....

Distractor Analysis: Trap choice eliminates careless test-takers who confuse roots with coordinates...

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