AP Physics 1hardmcq1 pt
A 0.80 kg mass on a spring oscillates with amplitude 0.15 m and period 0.40 s (π ≈ 3.14). Its maximum kinetic energy is about
A.2.2 J
B.1.1 J
C.4.4 J
D.0.55 J
Explanation
Core Concept
ω = 2π/T ≈ 15.7 rad/s; Kₘax = ½m(ωA)² = ½(0.80)(15.7·0.15)² ≈ 2.2 J.
Correct Answer
A2.2 J
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