namicsProblem 7.27- Enhanced-with Feedback Problem 7.27 Enhanced-with Feedback P

Question

namicsProblem 7.27- Enhanced-with Feedback Problem 7.27 Enhanced-with Feedback Part A A 1.80-m-long barbell has a 200 kg weight on its left end and a 15.0 kg weight on its right end If you ignore the weight of the bar itself, how far from the left end of the barbel is the center of gravity? Express your answer to three significant figures and include the appropriate units di1.15 You may want to review ( pages 204 205 My Answers Give Up Correct Here we learn how to calculee the poulion of gait, certer masses Part B Whene is the center of gravity if the 7. 00 kg mass of the barbel iself is taken into accoun Express your answer to three signficant figures and include the appropriate units. 1.16m My Answers Ge Incorrect; Try Again: 8 attempts remaining

Explanation / Answer

A] Taking moments around the left end,

35 * 1.8 = ( 35 + 20) * x

x = 35*1.8 / (35+20) = 1.145 m

B] With a uniform bar of mass 7 kg whose center of mass is 0.75 m from the left

35 * 1.8 + 7 * 0.9 = (35+20+7) * y

y = (35*1.8+7*0.9)/(35+20+7) = 1.12 m

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.