A block of mass is connected to an elastic spring of spring constant and oscillates…
PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics
Problem
A block of mass 0.1 kg is connected to an elastic spring of spring constant 640 Nm−1 and oscillates in a medium of constant 10−2 kg s−1. The system dissipates its energy gradually. The time taken for its mechanical energy of vibration to drop to half of its initial value, is closest to:
(1) 2 s
(2) 3.5 s
(3) 5 s
(4) 7 s