please answer only d) and e) .. question a) and b) ALREADY ASKED PREVIOUSLY! A discus throweraccelerates a disc with mass of 2 kg from rest withinfour full turns (revolutions) and releases it at a speed of 22.5 m/s. Assuming auniform rate of increase in angular velocity and the circular path has a radius of0.81 m, calculate:(a)the angular displacement,(b)the angular acceleration,(c)the (linear) tangential acceleration, and(d)the net force being exerted on the discus by the athlete just before release.(e)the angle of this force with respect to the radius of the circular motion.

We have givenMass of disc (m)=2 kg Four turn of revolution (θ)=4×2π=8π radInitila velocity u=0…

A discus thrower accelerates a disc with mass of 2 kg from rest wit four full turns (revolutions) and releases it at a speed of 22.5 m/s. Assumin uniform rate of increase in angular velocity and the circular path has a radius 0 81 m calculatO!

A discus thrower accelerates a disc with mass of 2 kg from rest wit four full turns (revolutions) and releases it at a speed of 22.5 m/s. Assumin uniform rate of increase in angular velocity and the circular path has a radius 0 81 m calculatO!

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter11: Angular Momentum

Section: Chapter Questions

Problem 89AP: A solid cylinder of mass 2.0 kg and radius 20 cm is rotating counterclockwise around a vertical axis...

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Concept explainers

Rigid Body

A rigid body is an object which does not change its shape or undergo any significant deformation due to an external force or movement. Mathematically speaking, the distance between any two points inside the body doesn't change in any situation.

Rigid Body Dynamics

Rigid bodies are defined as inelastic shapes with negligible deformation, giving them an unchanging center of mass. It is also generally assumed that the mass of a rigid body is uniformly distributed. This property of rigid bodies comes in handy when we deal with concepts like momentum, angular momentum, force and torque. The study of these properties – viz., force, torque, momentum, and angular momentum – of a rigid body, is collectively known as rigid body dynamics (RBD).

Question

please answer only d) and e) .. question a) and b) ALREADY ASKED PREVIOUSLY!

A discus thrower
accelerates a disc with mass of 2 kg from rest within
four full turns (revolutions) and releases it at a speed of 22.5 m/s. Assuming a
uniform rate of increase in angular velocity and the circular path has a radius of
0.81 m, calculate:
(a)
the angular displacement,
(b)
the angular acceleration,
(c)
the (linear) tangential acceleration, and
(d)
the net force being exerted on the discus by the athlete just before release.
(e)
the angle of this force with respect to the radius of the circular motion.

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