試題詳解

33. A 2 kg object is attached to an ideal massless horizontal spring of spring constant 100.0 N/m and
is at rest on a frictionless horizontal table. The spring is aligned along the x-axis and is fixed to a
peg in the table. Suddenly this mass is struck by another 2 kg object traveling along the x-axis at 3 m/s, and the two masses stick together. What are the amplitude and period of the oscillations
that result from this collision?
(A) 0.30 m, 1.26 s
(B) 0.30 m, 0.88 s
(C) 0.42 m, 0.88 s
(D) 0.42 m, 1.26 s
(E) 0.42 m, 5.00 s