[填空题]
A helicopter rotor blade can be considered a long txl zbtuic0g, d 1fgp4 lr-4x(mn-r5 5bhin rod, as shown in Fig. 8nh uvki8:,/b3j8 3pye8hlp dl–46.p b 8vljhdpk8 e3/uhi3y8l,:n (a) If each of the three rotor helicopter blades is 3.75 m long and has a mass of 160 kg, calculate the moment of inertia of the three rotor blades about the axis of rotation. $kg \cdot m^2$ (b) How much torque must the motor apply to bring the blades up to a speed of 5 $rev/s$ in 8.0 s? $m \cdot N$
Post time 2025-2-18 20:00:22
