# Question

To start her lawn mower, Julie pulls on a cord that is wrapped around a pulley. The pulley has a moment of inertia about its central axis of and a radius of 5.00 cm. There is an equivalent frictional torque impeding her pull of τf = 0.430 m ∙ N. To accelerate the pulley at α = 4.55 rad/s2,

(a) How much torque does Julie need to apply to the pulley?

(b) How much tension must the rope exert?

(a) How much torque does Julie need to apply to the pulley?

(b) How much tension must the rope exert?

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