Let's consider the law of conservation of energy.
, where PE is the potential energy, Ktranslational is the translational kinetic energy, and Krot is the rotational kinetic energy.
But, PE = mgh
A solid sphere of mass 4.0 kg and radius 0.12 m starts from rest at the top of a ramp inclined 15 degrees, and rolls to the bottom. The upper end of the ramp is 1.2 m higher than the lower end. What is the linear speed of the sphere when it reaches the bottom of the ramp? (Note: I = 0.4 MR2 for a solid sphere and g = 9.8m/s2)
b. 4.1 m/s
c. 3.4 m/s
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