Yo-Yo man releases a yo-yo from rest and allows it to drop, as he keeps the top
ID: 1987943 • Letter: Y
Question
Yo-Yo man releases a yo-yo from rest and allows it to drop, as he keeps the top end of the string stationary, as shown in the image. The mass of the yo-yo is 0.056kg, its moment of inertia is 2.9 *10-5kg.m2, and the radius, r, of the axle the string wraps around is 0.0064m.
a) What is the linear speed, v, of the yo-yo after it has dropped through a height 0.50hm
b) If the yo-yo’ moment of inertia is increased, does its final speed increase, decrease, or stay the same? Justify your answer. Calculate the final speed for the case I = 3.9*10-5kg.m
really need help with the second part my answer doesnt seem right
Explanation / Answer
considering,the rotational energy and kinetic energies,we have m*g*h = 1/2*m*v^2 +1/2*I*v^2/r^2 just plug 'em in. msg me for further help,if any required
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