[填空题]
A teenager pushes tangentially on a small hand-driven mer4k l6plk tn:*jry-go-round ,j c.sq ead n1 zc4)euq)tbk/t(b*h:i5p+l cdand is able to accelerate it from rest 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 childrencdq e(a 5.l1pc)idth)knb/ + ejz,4 c:sbq u*t (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
