[填空题]
A helicopter rotor bla3 ptr8owu u:+ dkd0g.mde can be considered a long thin rod, as shown in 3ef.q4;r r 0tdxt1ui/bb8 ffrFig. 8–46.8r ft1f /0fr eixt3r qbd4u;.b (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
