A block is attached to an ideal horizontal spring

PHYSICS · Single correct · A Level · Physics · Further mechanics and thermal physics · Further mechanics and thermal physics

Problem

A block is attached to an ideal horizontal spring. • Experiment 1: The spring is compressed a distance

x

and released from rest. • Experiment 2: The spring is compressed a distance

2x

and released from rest. Neglect friction. Which statement correctly compares the block’s maximum speeds

v_1

(Experiment 1) and

v_2

(Experiment 2)? (a)

v_2 = \sqrt{2}\,v_1

(b)

v_2 = v_1

(c)

v_2 = 2 v_1

(d)

v_2 = 4 v_1