Calculating Normal Force on a Sliding Child - Homework Solution

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AI Thread Summary
To calculate the normal force exerted on a 22.0 kg child sliding down a 37.0° slide, the formula Fnormal = mg cos(x) is used. The initial calculation yielded -172N, which was incorrect due to a sign error. The correct magnitude of the normal force is 172N. The confusion arose from misreading the question, highlighting the importance of careful reading in problem-solving. Accurate calculations are essential for understanding forces in physics problems.
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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
 
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frictionless?

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