Calculating Normal Force on a Sliding Child - Homework Solution

[linnus]

Homework Statement

A 22.0 kg child slides down a slide that makes a 37.0° angle with the horizontal. What is the magnitude of the normal force that the slide exerts on the child?

Homework Equations

Fnormal= mg cos (x)

The Attempt at a Solution

Fnormal= 22.0kg(-9.80m/s^2) (cos 37)= 172N...but that's not right

I'm so confused..thanks for helping

 

[rocomath]

frictionless?

that's the value i got.

 

[linnus]

ah, I see I didn't read the question carefully enough @_@ I put -172N for the answer instead of 172. Thanks!