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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A circular disc of mass m and radius R is set into motion on a horizontal floor with a linear speed v in the forward direction and an angular speed ω= R v ​ in the clockwise direction as shown in Figure. Find the magnitude of the total angular momentum of the disc about the bottom most point O of the disc.

A circular disc of mass m and radius R is set into motion on a horizontal floor with a linear speed v in the forward direction and an angular speed ω= R v ​ in the clockwise direction as shown in Figure. Find the magnitude of the total angular momentum of the disc about the bottom most point O of the disc.

A particle of mass `m` is projected with a speed `u` at an angle `theta` to the horizontal at time `t = 0`. Find its angular momentum about the point of projection `O` at time `t` respectively vectorially. Assume the horizontal and vertical lines through `O` as `X` and `Y` axes