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1)A 1kg solid ball (I=2/3mr^2) rolls on a horizontal surface at the rate of 20m/s. its...

1)A 1kg solid ball (I=2/3mr^2) rolls on a horizontal surface at the rate of 20m/s. its total kinetic energy is


2)the angular momentum of a particle of mass 0.01kg and position vector r=(10i+6j)m and moving with a velocity 5i m/s about the origin is


3)a flywheel is given a speed of 900rpm in 15s. determine the linear acceleration of a point 0.5m from the horizontal axis is


4)a wheel of radius 0.04 and moment of inertia 3.2x10^-4kgm^2 has a constant force of 0.049N applied tangentially at the rim. Starting from rest, its angular speed after 3s is

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