- #1

RJLiberator

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## Homework Statement

A 60 kg person rides in a 20 kg cart

moving at 13 m/s at the

*bottom of a valley*that is in the shape of an arc of a circle

with a radius of 36 m. What is the apparent weight of the person as the cart passes

the bottom of the valley?

## Homework Equations

F_centripital = m*v^2/r

F = ma

## The Attempt at a Solution

So this seems a little too easy to be correct.

Apparent weight = m(a+g)=m(v^2/r+g)

=60(13^2/36+9.80)

=869.67 N

The thing I am wondering about is the sign on gravity according to it being in the bottom of a valley.

Is my work correct?

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