• 2019: The angular momentum of a particle of mass m moving with a uniform speed v in a circular path of radius r is given by
L = mvr

where L is the angular momentum, m is the mass of the particle, v is the speed of the particle, and r is the radius of the circular path.

2018: The ratio of the angular momenta of two particles of masses m1 and m2 moving in concentric circles of radii r1 and r2 respectively is given by

L1/L2 = m1r1/m2r2

where L1 is the angular momentum of the first particle, L2 is the angular momentum of the second particle, m1 is the mass of the first particle, m2 is the mass of the second particle, r1 is the radius of the circle in which the first particle is moving, and r2 is the radius of the circle in which the second particle is moving.

2017: The centripetal force acting on a particle of mass m moving with a uniform speed v in a circular path of radius