Assignments - Assignments 8:55 PM Chap 5 6 Quiz Circular...

Info icon This preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
10/26/10 8:55 PM Assignments Page 1 of 9 http://session.masteringphysics.com/myct/assignments Chap 5 & 6 - Quiz - Circular Motio and Gravitation Due: 11:59am on Monday, October 18, 2010 Note: To understand how points are awarded, read your instructor's Grading Policy . [ Switch to Standard Assignment View] Problem 5.50 Estimate the force a person must exert on a string attached to a 0.205 ball to make the ball revolve in a horizontal circle.The ball makes 2.30 revolutions per second ( = 0.435 ). Don't ignore the weight of the ball which revolves on a string 0.690 long. Part A In particular, find the magnitude of . [ Hint : Set the horizontal component of equal to ; also, since there is no vertical motion, what can you say about the vertical component of ?] Express your answer with the appropriate units. ANSWER: = 29.5 Correct Part B Find the angle makes with the horizontal. Express your answer with the appropriate units. ANSWER: = 3.90 Correct Problem 5.47 A jet pilot takes his aircraft in a vertical loop. As shown in the figure . [ Print ]
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
10/26/10 8:55 PM Assignments Page 2 of 9 http://session.masteringphysics.com/myct/assignments Part A If the jet is moving at a speed of 1150 at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 5.5 's. Express your answer using two significant figures. ANSWER: = 1900 Correct Part B Calculate the 73 pilot's effective weight (the force with which the seat pushes up on him) at the bottom of the circle. Express your answer using two significant figures. ANSWER: = 4700 Correct Part C Calculate the 73 pilot's effective weight (the force with which the seat pushes up on him) at the top of the circle (assume the same speed). Express your answer using two significant figures. ANSWER: = 3200 Correct Problem 5.35 A child sitting 1.10 from the center of a merry-go-around moves with a speed of 1.50 . Part A Calculate the centripetal acceleration of the child. ANSWER: = 2.05
Image of page 2
10/26/10 8:55 PM Assignments Page 3 of 9 http://session.masteringphysics.com/myct/assignments = Correct Part B Calculate the net horizontal force exerted on the child ( = 23.5 ).
Image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern