- #1

soccer_09

- 8

- 1

## Homework Statement

Block on Incline In Fig. 16-35, a block weighing 17.0 N is able to slide without friction on a 32.0° incline. It is connected to the top of the incline by a massless spring of unstretched length 0.475 m and spring constant 110 N/m.

Figure 16-35

(a) How far down the incline would you have to place the block so it would not oscillate when you let go?

1 m

(b) If the block is pulled slightly down the incline from where you placed in part (a) and released, what is the period of the resulting oscillations?

## Homework Equations

I got part b, just need part a.

I was told that Force(spring) = Force(gravity)

(Fs) = kx

(Fgrav)= mgcos(theta) since on an incline

## The Attempt at a Solution

The force of spring = kx and

The force of grav = mg cos(theta)

By doing this my answer should be x = [ mg cos (theta) ] / k

which comes out to be about 1.284

This showed up as incorrect. Some guidance about what I'm doing wrong is greatly appreciated.

I had posted in another thread a few hours ago and no one responded... but it was one that already had many posts so I guess people just ignored it.