A mass–spring system is oscillating on a smooth horizontal surface
PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics
Problem
A mass–spring system is oscillating on a smooth horizontal surface. Immediately after the mass has crossed the equilibrium position and is moving towards the right, its displacement x is a very small positive value. With right taken as positive, which set correctly represents the signs of displacement x, velocity v, and acceleration a at that instant?
(a) x:−,v:+,a:−
(b) x:+,v:+,a:+
(c) x:+,v:+,a:−
(d) x:+,v:−,a:+