[填空题]
A teenager pushes tangentib h+xr q4,7d) + lzdhmr+ztho9ally on a small hand-driven merry-go-round and is ar h74:n hl-wjxble to accelerate it from restn-x 4wrj:l7 hh to a frequency of 15 rpm in 10.0 s. Assume the merry-go-round is a uniform disk of radius 2.5 m and has a mass of 760 kg, and two children (each with a mass of 25 kg) sit opposite each other on the edge. Calculate the torque required to produce the acceleration, neglecting frictional torque. $\approx$ $m \cdot N$ What force is required at the edge? N
Post time 2025-2-18 20:00:22
