What is the magnitude of the spring force given M,K and X

[AStupidHippo]

Homework Statement

1.In a game a .12kg disk is shot across a frictionless surface . The spring is compressed by 6cm. The spring constant is 230 N/m. What is the magnitude of the spring force?

2. A piece of plastic is attached to a spring. The spring is compressed 2cm and the released. If the spring constant is 85 N/m, what is the magnitude of the spring force acting on the toy?

Homework Equations

f=-kx[/B]

The Attempt at a Solution

[/B]

1. -230*-6
= 1380

2= -85*-2
=170

 

[HallsofIvy]

You are just being careless. You are told that the spring constant is 85 Newtons per meter and that the spring is compressed 6 centimeters, NOT 6 meters!

 

[AStupidHippo]

You are just being careless. You are told that the spring constant is 85 Newtons per meter and that the spring is compressed 6 centimeters, NOT 6 meters!

Yes, that is quite careless of me. My formulas for both are correct tho, right?