Solve the Problem

Multiple Choice

Solve the problem.
-A 25-kg mass is attached to a spring that hangs vertically and is stretched 1 m from the equilibrium position of the spring. Assume a linear spring with F(x) = kx. How much work is required to stretch the spring and lower the mass 1.5 m? Round to four decimal places when appropriate.

A) 459.375 J
B) 1010.625 J
C) 91.875 J
D) 643.125 J