{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

469_Physics ProblemsTechnical Physics

469_Physics ProblemsTechnical Physics - Chapter 15(f T= a...

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

Chapter 15 471 (f) T = + = + = 2 0 4 0 25 0 3 9 8 0 024 12 0 3 3 06 0 497 3 56 . . . . . . . . . a fb g e j b gb g kg m s m s N m kg 12 N m s s s 2 π Then f T = = 1 0 281 . Hz . (g) T mg kv m k s k = + 2 µ µ π b g increases as m increases, so the frequency decreases . (h) As k increases, T decreases and f increases . (i) As v increases, T decreases and f increases . (j) As µ µ s k b g increases, T increases and f decreases . *P15.75 (a) Newton’s law of universal gravitation is F GMm r Gm r r = − = − F H G I K J 2 2 3 4 3 π ρ Thus, F Gm r = − F H G I K J 4 3 πρ Which is of Hooke’s law form with k Gm = 4 3 πρ (b) The sack of mail moves without friction according to F H G I K J = 4 3 πρ Gmr ma a Gr r = − F H G I K J = − 4 3 2 πρ ω Since acceleration is a negative constant times excursion from equilibrium, it executes SHM with ω πρ = 4 3 G and period T
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