A block is attached simultaneously to two ideal springs that act in parallel along a…

PHYSICS · Single correct · AP · Physics 1: Algebra-based · Work Energy and Power · Work Energy and Power

Problem

A block is attached simultaneously to two ideal springs that act in parallel along a frictionless horizontal surface. One spring has constant

k_1 = 100\,\text{N/m}

and the other has constant

k_2 = 200\,\text{N/m}

. The block is pulled

0.10\,\text{m}

from equilibrium and held momentarily at rest. What is the total elastic potential energy stored in the two springs at that instant? (a)

3.0\,\text{J}

(b)

1.5\,\text{J}

(c)

1.0\,\text{J}

(d)

0.33\,\text{J}