Question

A force of 8 N is applied tangentially to the rim of a pulley with mass of 4 kg and radius of 60 cm. Determine the angular acceleration it acquires.

Answer 1

6.67 rad/s²

Step-by-step explanation:

Assuming the pulley is a solid disk or cylinder, the moment of inertia is I = ½ mr².

∑τ = Iα

(8 N) (0.60 m) = ½ (4 kg) (0.60 m)² α

α = 6.67 rad/s²