A model train with a mass of 4 kg is moving along a track at 8 (cm)/s. If the curvature of the track changes from a radius of 54 cm to 27 cm, by how much must the centripetal force applied by the tracks change?
1 Answer
Mar 4, 2017
Explanation:
Firstly let's just put everything in SI units - change the
Now, the equation for centripetal force is
where
In this case, the radius is changing, so we can say that
Putting in the values that we know,