List of top Physics Questions on Mechanics asked in Maharashtra Class XII

Define second's pendulum. Derive a formula for the length of second's pendulum. A particle performing linear S.H.M. has maximum velocity 25 cm/s and maximum acceleration 100 cm/s². Find period of oscillations.
Derive an expression for terminal velocity of a spherical object falling under gravity through a viscous medium.
Eight droplets of water each of radius 0.2 mm coalesce into a single drop. Find the decrease in the surface area.
Define moment of inertia of a rotating rigid body. State its SI unit and dimensions.
Calculate the moment of inertia of a uniform disc of mass 10 kg and radius 60 cm about an axis perpendicular to its length and passing through its centre.
State the formula for critical velocity in terms of Reynold's number for a flow of a fluid.
Write the differential equation for angular S.H.M.
When the bob performs a vertical circular motion and the string rotates in a vertical plane, the difference in the tension in the string at horizontal position and uppermost position is ______.
A liquid rises in glass capillary tube up to a height of 2.5 cm at room temperature. If another glass capillary tube having radius half that of the earlier tube is immersed in the same liquid, the rise of liquid in it will be ______.