SCAN0023

# SCAN0023 - 7 A cylindrical barrel with a radius of 30 cm...

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

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: 7. A cylindrical barrel with a radius of 30 cm and a mass of 75 kg rolls across a warehouse ﬂoor without slipping. The speed of the barrel’s center of mass is 8.0 m/s. Note. 1 (cylinder) : 1/2 MR2. .. ’01: a. What is the total kinetic energy of the barrel? ‘f b. At the same moment the speed of the barrel was noted to be 8.0 m/s it was also noted to be slowing down with an angular acceleration of — 0.30 rad/\$2. How far W from that point will the barrel travel before it stops? f 'vam T =0.E>m mt75K¢3 van“: <5‘Om/S ol _ \ ‘— l 2’ _. J. m Q- KE~ vacmi.+’i~1m - Z 'U'+ b~ VO'L =2 U3; + Zoe [:9 2 “NY“ .... _ O (7;) + 2.0; As 9 A9 - Ax = ‘C A8 —.= Q 3(u25)==—1:555 8. A bowling ball is released at the upper edge of a ramp that is inclined at an angle of 37 degrees with the ﬂoor. The ramp is 5.0 m long. The bowling ball is allowed to roll freely without slipping under the inﬂuence of gravity down the ramp. The bowling ball has a mass of 40kg and a diameter of 400m. Assume the bowling ball is a uniform sphere. (l = 2/5 MR2) a. Calculate the total kinetic energy (rotational + translational) of the bowling ball at the bottom of the ramp. W b. Calculate the linear speed of the bowling ball at the bottom of the ramp. c. How would the speed of a pool ball with mass of 400 g and diameter of 7.0 cm compare with the speed of the bowling ball at the bottom of the ramp? 9:379 ot:5m Ma LLQKC’A T1033“ M=olgLnenBva37= 3.0m a. AKE +m \«x: ib‘ \<E% : 'L‘WVU‘I +J’:Lr) FL: .—-LM'U’ l+l<gma(”):16 MVP?" __. ~_ :2 L83" 0 4 (01 ﬁ)( 3') l . _ tmoaoaDDEDT . __ ‘7 ‘1. ﬁ _ ‘ .. _ W\ . l<E‘—-—m*\5 —> "on gig _ one (S be mar O x in ,1 I 3 & 5 ll ...
View Full 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