PHYS
09_InstSolManual_PDF_Part13

09_InstSolManual_PDF_Part13 - Rotational Motion 9-13(b Krot...

• Notes
• 1

This preview shows page 1. Sign up to view the full content.

(b) (c) 9.62. Set Up: The outer radius is The angular speed is greatest when r is smallest. Solve: (a) when so (b) Find r when The diameter is 4.84 cm. (c) gives is negative since the rotation rate slows as the tracking spirals outward. 9.63. Set Up: For alignment, the earth must move through 45° more than Mars, in the same time t . Solve: 9.64. Set Up: When it rolls without slipping, When there is no friction the angular speed of rotation is constant. Take upward and let in the valley. Solve: (a) Find the speed in the level valley: Therefore, so and Find the height H it goes up the other side. Its rotational kinetic energy stays constant as it rolls on the frictionless surface. (b) Some of the initial potential energy has been converted into rotational kinetic energy so there is less potential energy at the second height H than at the first height 9.65. Set Up: My total mass is I model my head as a uniform sphere of radius 8 cm. I model my trunk and legs as a uniform solid cylinder of radius 12 cm. I model my arms as slender rods of length 60 cm.
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

• 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.

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

• 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.

Dana University of Pennsylvania ‘17, Course Hero Intern

• 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.

Jill Tulane University ‘16, Course Hero Intern