Gravitational and Normal Force

Question

The magnitude of the gravitational force exerted on the block is F_g², and the magnitude of the normal force exerted by the track on the block is Fn², Which of the following correctly compares the magnitudes of these two forces when the block is at the lowest point on the track?

a.) F normal > F gravity

b.) F normal = F gravity

c.) F normal < F gravity

d.) the magnitudes cannot be compared without knowing the radius of the arc of the track.

Answer 1

At the lowest point on the block instantaneob)usly there is no acceleration vertically so the net force on the block must be zero, so it must be (b)

Mike