(adsbygoogle = window.adsbygoogle || []).push({}); [SOLVED] Newton's Law Flat Curve

1. The problem statement, all variables and given/known data

You are riding in a school bus. As the bus rounds a flat curve at constant speed, a lunch box with a mass of 0.470 kg suspended from the ceiling of the bus by a string of length 1.88 m is found to hang at rest relative to the bus when the string makes an angle of 28.0 with the vertical. In this position the lunch box is a distance 50.0 m from the center of curvature of the curve.

What is the speed v of the bus?

Take the free fall acceleration to be g = 9.80 m/s^2.

2. Relevant equations

Fg=|Fty|

mg=|Ft|Cos(B)

x direction

Ft

a=V^2/R

V=2pi*R/T

3. The attempt at a solution

|Ft|=mg/Cos(B)

=(.47)(9.8)/cos(28) = 5.21

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# Homework Help: Newton's Law Flat Curve

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