A3.80 kg rock has a horizontal velocity of magnitude 12.0 m/s when it is atpoint P in the figure (Egure 1)FigureU= 12.0 m/sP8.00 m36.9⁰Part AAt the instant, what is the magnitude of its angular momentum relative to point OExpress your answer in kilogram-meters squared per second,L-219 kg-m²/✔CorrectPart BPrevious AnswersWhat is the direction of the angular momentum in part (A)?O into the pageO out of the pageSubmitPart CRequest Answer Part CIf the only force acting on the rock is its weight, what is the magnitude of the rate of change of its angular momentum at this instant?Express your answer in kilogram-meters squared per second squared.195] ΑΣΦΑ291.725Part DSubmit Previous Answers Request AnswerX Incorrect; Try Again; 5 attempts remainingWhat is the direction of the rate in part (C)?resetinto the pageO out of the pageSubmit Request Answer?kg-m²/s²

Answered: Image /qna-images/answer/3a6bdade-3ed2-4b16-bc1e-b166d0a946be.jpg

If the only force acting on the rock is its weight, what is the magnitude of the rate of change of its angular momentum at this instant? Express your answer in kilogram-meters squared per second squared. 15. ΑΣΦ 291.725 Part D Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining. What is the direction of the rate in part (C)? into the page O out of the page 2 reset Submit Request Answer ? kg-m²/s²

If the only force acting on the rock is its weight, what is the magnitude of the rate of change of its angular momentum at this instant? Express your answer in kilogram-meters squared per second squared. 15. ΑΣΦ 291.725 Part D Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining. What is the direction of the rate in part (C)? into the page O out of the page 2 reset Submit Request Answer ? kg-m²/s²

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter10: Rotational Motion And Angular Momentum

Section: Chapter Questions

Problem 30CQ: Gyroscopes used in guidance systems to indicate directions must have an angular momentum that does...

See similar textbooks

Similar questions

Suppose the polar ice sheets broke free and floated toward Earth’s equator without melting. What would happen to Earth’s angular velocity?
A particle has mass 0.5 kg and is traveling along the line x=5.0m at 2.0 m/s In the positive y-direction. What is the particle’s angular momentum about the origin?
At a particular instant, a 1.0-kg particle’s position is , its velocity is , and the force on it is . (a) What is the angular momentum of the particle about the origin? (b) What is the torque on the particle about the origin? (c) What is the time rate of change of the particle’s angular momentum at this instant?
A thin meter stick of mass 150 g rotates around an axis perpendicular to the stick’s long axis at an angular velocity of 240 rev/min. What is the angular momentum of the stick if the rotation axis (a) passes through the center of the stick? (b) Passes through one end of the stick?
A proton is accelerated in a cyclotron to 5.0106m/s in 0.01 s. The proton follows a circular path. If the radius of the cyclotron is 0.5 km, (a) What is the angular momentum of the proton about the center at its maximum speed? (b) What is the torque on the proton about the center as it accelerates to maximum speed?
A small ball of mass 0.50 kg is attached by a massless sting to a vertical rod that Is spinning as shown below. When the rod has an angular velocity of 6.0 rad/s, the sting makes an angle of 30 with respect to the vertical. (a) If the angular velocity is increased to 10.0 rad/s, what is the new angle of the string? (b) Calculate the initial and final angular momenta of the ball. (c) Can the rod spin fast enough so that the ball is horizontal?
There an analogy between rotational and physical quantities. What rotational quantities are analogous to distance and velocity?
The axis of Earth makes a 23.5 angle with a direction perpendicular to the plane of Earth’s orbit. As shown below, this axis precesses, making one complete rotation in 25,780 y. (a) Calculate the change in angular momentum in half this time. (b) What is the average torque producing this change in angular momentum? (c) If this torque were created by a pair of forces acting at the most effective point on the equator, what would the magnitude of each force be?
Describe different collisions—one in in which angular momentum is conserved, and the other in which it is not. Which condition determines whether or not angular momentum is conserved in a collision?
A merry-go-round has a radius of 2.0 m and a moment of inertia 300kgm2 . A boy of mass 50 kg runs tangent to the rim at a speed of 4.0 m/s ad jump on. If the merry-go-round is initially at rest, what is the angular velocity after the boy jumps on?
A potter’s disk spins from rest up to 10 rev/s in 15 s. The disk has a mass 3.0 kg and radius 30.0 cm. What is the angular momentum of the disk at t=5s , t=10s ?
A DVD is rotating at 500 rpm. What is the angular momentum of the DVD if has a radius of 6.0 cm and mass 20.0 g?