A block attached to a horizontal spring oscillates between and

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Oscillations · Oscillations

Problem

A block attached to a horizontal spring oscillates between

x = -A

and

x = +A

. When the block is at

x = \tfrac{1}{3}A

, which comparison between its kinetic energy

K

and potential energy

U

is most accurate? (a)

K = U

(b)

K

is greater than

U

(c)

U

is greater than

K

(d)

K = 2U