Two solid spheres simultaneously start rolling (from rest) down an incline. One sphere has twice ...
Two solid spheres simultaneously start rolling (from rest) down an incline. One sphere has twice the radius and twice the mass of the other.
1. Which reaches the bottom of the incline first? (answer: arrive at the same time)
2. Which has the greater speed there? (answer: same speed)
3. Which has the greater total kinetic energy at the bottom? (answer: the one with larger R)
i already have the answer, please explain WHY, thank you
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