Question

In an experiment, a mass m = 40 gm, attached to a string wrapped around the axle of a flywheel and starting from rest, falls through a distance of 147 cm in 3.5 seconds. The diameter of the axle of the flywheel is 12 cm
What is the acceleration of the mass and the angular acceleration of the flywheel?




From kinematics for accelerated motion
s=at^2/2
a=2s/t^2
ε =a/R

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