Translational Kinetic Energy of a Rolling Sphere
A solid sphere starts from rest and rolls without slipping down an inclined plane. Let K represent the sphere’s translational kinetic energy and y represent its vertical displacement from the starting point. Which of the following expressions correctly relates K to y?
A
K = mgy
B
K = (5/7)mgy
C
K = (1/2)mgy
D
K = (2/3)mgy
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