24. On a plane, a massless long rod connects two point masses M1=2.2 (kg) and M2=3.1 (kg) at its ends, with a fixed axis of rotation as shown in Figure 9, where R1=0.37(m) and R2=0.24(m). The axis is perpendicular to the plane of the page. A bullet of mass m=0.2(kg) traveling at a velocity v=15(m/s) perpendicularly strikes M1 and embeds itself in M1, causing the rod to rotate about the axis. Calculate the angular velocity. M V m R rotational axis R
(A) ω=2.31 (rad/sec)
(B) ω=2.19 (rad/sec)
(C) ω=2.77 (rad/sec)
(D) ω=2.01 (rad/sec)
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統計: 尚無統計資料
統計: 尚無統計資料