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The position vector of a particle of mass 'm' moving in the XY- plane is 7(1) ir cos or + jr sin wr, where

The position vector of a particle of mass 'm' moving in the XY- plane is 7(1) ir cos or + jr sin wr, where 'r' and 'w' are constants. Find (a) the velocity, acceleration and linear momentum of the particle (b) the force on the particle (c) the angular momentum and torque of the force about the origin. (d) Is the linear momentum conserved? (e) Is the angular momentum conserved ?

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