Question

f multiple objects are placed side by side on a ramp, generally speaking, which object will reach the bottom fastest?

		All objects will roll down the slope at the same speed.
		The one with the largest radius.
		The one with the smallest radius.
		The one with the smallest moment of inertia.
		The one with the largest moment of inertia.

You have a 5 kg solid metal cylinder with a radius of 2.5 cm.  You place it at the top of a ramp where it is, vertically 0.5 m above the lowest point. How fast will it be going at the bottom?

		2.65 m/s
		3.13 m/s
		2.47 m/s
		2.21 m/s

You have a 5 kg solid metal sphere with a radius of 2.5 cm.  You place it at the top of a ramp where it is, vertically 0.5 m above the lowest point. How fast will it be going at the bottom?

		2.65 m/s
		3.13 m/s
		2.47 m/s
		2.21 m/s

You have a solid metal cylinder and a solid metal sphere, both with identical mass, and both with equal radius. You place the both at the same vertical height at the top of a ramp. Which one will be going faster at the bottom?

		They both will be going the same speed
		The Sphere
		The Cylinder

Answer 1