A mountain biker takes a jump in a race and goes airborne. The mountain bike is traveling at 12.5 m/s before it goes airborne. If the mass of the front wheel on the bike is 950 g and has radius 30 cm,what is the angular momentum (in kg · m/s) of the spinning wheel about its axis in the air the moment the bike leaves the ground? (Assume the wheel can be approximated by a hoop rotating aboutits center of mass that rolls without slipping before the jump. Enter the magnitude.)kg · m2/s The blades of a wind turbine are 50 m in length and rotate at a maximum rotation rate of 12 rev/min. (Enter the magnitudes.)(a) If the blades are 5,900 kg each and the rotor assembly has three blades, calculate the angular momentum (in kg • m2/s) of the turbine at this rotation rate. (Assume the turbine blades can beapproximated as rods rotating about one end.)|kg · m2/s(b) What is the torque (in N: m) required to rotate the blades up to the maximum rotation rate in 5 minutes? (Assume the blades start from rest.)N. m

Answered: Image /qna-images/answer/d99aac1a-dac8-4f91-b7dc-3d33820b2f28.jpg

what is the angular momentum (in kg · m2/s) of the spinning wheel about its axis in the air the moment the bike leaves the ground? (Assume the wheel can be approximated by a hoop rotating abo its center of mass that rolls without slipping before the jump. Enter the magnitude.)

what is the angular momentum (in kg · m2/s) of the spinning wheel about its axis in the air the moment the bike leaves the ground? (Assume the wheel can be approximated by a hoop rotating abo its center of mass that rolls without slipping before the jump. Enter the magnitude.)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

Question

A mountain biker takes a jump in a race and goes airborne. The mountain bike is traveling at 12.5 m/s before it goes airborne. If the mass of the front wheel on the bike is 950 g and has radius 30 cm,
what is the angular momentum (in kg · m/s) of the spinning wheel about its axis in the air the moment the bike leaves the ground? (Assume the wheel can be approximated by a hoop rotating about
its center of mass that rolls without slipping before the jump. Enter the magnitude.)
kg · m2/s

The blades of a wind turbine are 50 m in length and rotate at a maximum rotation rate of 12 rev/min. (Enter the magnitudes.)
(a) If the blades are 5,900 kg each and the rotor assembly has three blades, calculate the angular momentum (in kg • m2/s) of the turbine at this rotation rate. (Assume the turbine blades can be
approximated as rods rotating about one end.)
|kg · m2/s
(b) What is the torque (in N: m) required to rotate the blades up to the maximum rotation rate in 5 minutes? (Assume the blades start from rest.)
N. m

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