Two masses 400 g and 350 g are suspended from the ends of a light string passing over a heavy pulley of radius 2 cm. When released from rest the heavier mass is observed to fall 81 cm in 9 s. The rotational inertia of the pulley is ____ kg⋅m2. (g=9.8 m/s2)
Held on 24 Jan 2026 · Verified 6 Jul 2026.
4.75×10−3
9.5×10−3
1.86×10−2
8.3×10−3
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