Asked by kelsey
A 1.27 kg hoop with a radius of 10.0 cm rolls without slipping and has a linear speed of 1.32 m/s.
Find the rotational kinetic energy.
Find the total kinetic energy of the hoop.
Find the rotational kinetic energy.
Find the total kinetic energy of the hoop.
Answers
Answered by
bobpursley
First, you need the moment of interia for a hoop. Look it up.
rotationalKE=1/2 I w^2=1/2 I (v/r)^2
total KE=rotationalKE+1/2 m v^2
rotationalKE=1/2 I w^2=1/2 I (v/r)^2
total KE=rotationalKE+1/2 m v^2