gc textbook chapter 8 Rotational Motion (id: 38320617f)

[填空题]
A grinding wheel is az g kamrp1;y36kd7/bj pwo b7 )1ujofz+cs p ka+p33i5uniform cylinder with a radius of 8.50 cm and a mass of 0.5w5 cf3 +pou3jp7zia1s +bpo k)80 kg. Calculate
(a) its moment of inertia about its center, $\approx$    $kg \cdot m^2$
(b) the applied torque needed to accelerate it from rest to 1500 rpm in 5.00 s if it is known to slow down from 1500 rpm to rest in 55.0 s。    $m \cdot N$

参考答案:
空格1: 0.0021±2%  空格2: 0.072±2% 


本题详细解析: