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weesiang_loke
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Homework Statement
For a yoyo made of two uniform discs of radius R and each has mass M/2. A short shaft connecting the discs has a very small radius of r. A string is wrapped around the shaft and the yoyo is released with initial speed of zero. Assume that the string is vertical all times and energy in the system is conserved
My question is whether the tension of the string when the yoyo is descending and the tension of string when it is ascending is the same.
Homework Equations
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The Attempt at a Solution
I think that the tension is the same for both cases as the net force acting downwards should be the same if we want the yoyo to accelerate when it moves downwards and decelerate when it moves up again. So in this case the energy is conserved. Is this the correct explanation?