A rod of length I and mass m rotates about end A in vertical plane as shown. Magnitude of normal reaction by the hinge at A is
(1)mg
(2) `(mg)/(2)`
(3)`(mg)/(4)`
(4) `(mg)/(3)`

Mg liberates H_(2) on reaction with

Mg liberates H_(2) on reaction with

Consider the situation shown in the figure. Uniform rod of length L can rotat freely about the hinge A in vertical plane. Pulleys and stringa are light and frictionless. If the rod remains horizontal at rest when the system is released then the mass of the rod is

A unifrom rod of length l and mass m is free to rotate in a vertical plane about A , Fig. The rod initially in horizontal position is released. The initial angular acceleration of the rod is (MI "of rod about" A "is" (ml^(2))/(3))

Two springs of spring constant (mg)/l each are attached to the end of a uniform rod of mass m and length l=5/3 m which is hinged in vertical plane as shown in figure. As the rod is rotated slightly about the hinge, it undergoes SHM with angular frequency omega . Find omega in rad/s.) Take g =10m/s^(2) .

A mass m is connected to a massless rod of length l( and is free to rotate in vertical plane about hinged end of rod. If rod is released from horizontal position and mass "m" collides inelastically at lowest position with identical mass m, as shown in the figure, then the maximum height attained by combined mass will be

A thin homogeneous rod of mass m and length l is free to rotate in vertical plane about a horizontal axle pivoted at one end of the rod. A small ballof mass m and charge q is attached to the opposite end of this rod. The whole system is positioned in a horizontal electric field of magnitude E=(mg)/(2q) . The rod is released from, shown position from rest. What is the speed of ball when rod becomes vertical?

A thin homogeneous rod of mass m and length l is free to rotate in vertical plane about a horizontal axle pivoted at one end of the rod. A small ballof mass m and charge q is attached to the opposite end of this rod. The whole system is positioned in a horizontal electric field of magnitude E=(mg)/(2q) . The rod is released from, shown position from rest. What is the angular acceleration of the rod at the instant of releasing the rod?

A thin homogeneous rod of mass m and length l is free to rotate in vertical plane about a horizontal axle pivoted at one end of the rod. A small ballof mass m and charge q is attached to the opposite end of this rod. The whole system is positioned in a horizontal electric field of magnitude E=(mg)/(2q) . The rod is released from, shown position from rest. What is the acceleration of the small ball at the instant of releasing the rod?

A rod AB of mass M and length L is shown in figure. End A of rod is hinged and end B is lying on the ground. Find the Normal reaction by ground on the rod