In space of horizontal `EF (E = (mg)//q)` exist as shown in figure and a mass m is released at the end of a light rod. If mass m is releases from the position shown in figure find the angular velocity of the rod when it passes through the bottom most position
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Fig. shows a ball having a charge q fixed at a point A. Two identical balls of mass m having charge +q and -q are attaached to the end of a light rod of length 2a. The system is released from the situation shown in fig. Find the angular velocity of the rod when the rod turns through 90^(@)

If the masses are released from the position shown in figure then the speed of mass m1 just before it strikes the floor is -

A uniform thin rod of length l and mass m is hinged at a distance l//4 from one of the end and released from horizontal position as shown in Fig. The angular velocity of the rod as it passes the vertical position is

A uniform thin rod of length l and mass m is hinged at a distance l//4 from one of the end and released from horizontal position as shown in Fig. The angular velocity of the rod as it passes the vertical position is

A rod is released from the horizontal position as shown. It is free to rotate about hinge. Find angular velocity of rod when it become vertical?