A model train with a mass of #4 kg# is moving along a track at #21 (cm)/s#. If the curvature of the track changes from a radius of #420 cm# to #140 cm#, by how much must the centripetal force applied by the tracks change?
1 Answer
Jul 20, 2017
The change in certipetal force is
Explanation:
The centripetal force is
mass,
speed,
radius,
The variation in centripetal force is