Question

Compute the linear momentum and angular momentum of a Frisbee of mass 0.168 kg if it has a linear speed of 2.05 m/s and an angular velocity of 56.5 rad/s. Treat the Frisbee as a uniform disk of radius 13.5 cm. linear momentum angular momentum

Answer 1

linear momentum = mass * velocity = 0.168 kg * 2.05 = 0.3444 kg m/s

The angular momentum of a rigid object is defined as the product of the moment of inertiaand the angular velocity. It is analogous to linear momentum and is subject to the fundamental constraints of the conservation of angular momentum principle if there is no external torque on the object. Angular momentum is a vector quantity. It is derivable from the expression for the angular momentum of a particle

angular momentum = moment of inertia * angular velocity = I *w

=0.5 M*r^2 *w =0.5* 0.168kg * 0.135^2 * 56.5 Rad/sec = 0.08649 kg*m²/s