- #1

kdunkzz

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## Homework Statement

A ball of mass 620 g hangs from a spring whose stiffness is 115 Newtons per meter. A string is attached to the ball and you are pulling the string to the right, so that the ball hangs motionless, as shown in the figure. In this situation the spring is stretched, and its length is 15 cm.

What would be the relaxed length of the spring, if it were detached from the ball and laid on a table?

## Homework Equations

I wish I knew...

## The Attempt at a Solution

I keep getting 10 cm, and I can't figure out what I'm doing wrong!

.620 x 9.8= 6.076/115N/m

=0.0528 roughly 5.28cm

15-5.28= 9.7 roughly 10 cm

I have tried both 10 cm and 9.7 cm and they are both wrong