NEET Questions Solved


Two masses M and m are attached to a vertical axis by weightless threads of combined length l. They are set in rotational motion in a horizontal plane about this axis with constant angular velocity ω. If the tensions in the threads are the same during motion, the distance of M from the axis is 

(1) MlM+m

(2) mlM+m

(3) M+mMl

(4) M+mml

(2) If the both mass are revolving about the axis yy' and tension in both the threads are equal then

Mω2x=mω2(lx)

Mx=m(lx)

x=mlM+m

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