Mastering Physics: Ch 07 X O Session ring physics.com assignment Problem 5147608
ID: 1459494 • Letter: M
Question
Mastering Physics: Ch 07 X O Session ring physics.com assignment Problem 51476080 /myct/itemView? Sianed in as Chris Lowther I Helo l Close COI I FGF PHYS-203 fa2015 Mastering Physics: Ch 07 X O e Session ring physics.com assignment Problem 51476089 /myct/itemView? Signed in as Chris Lowther I Help I Close A COLLEGE PHYS-203 fa2015 Resources Ch 07 HW (Part 2 Problem 7.44 Mastering Physics: Ch 07 X O e Session ring physics.com assignment Problem 5147609 /myct/itemView? A COLLEGE PHYS-203 fa2015 Signed in as Chris Lowther Help Close Ch 07 HW (Part 2) Problem 7.51 Resources previous l 9 of 19 l next Problem 7.51 Part A The CM of an empty 1150-kg car is 2.45 m behind the How far from the front of the car will the CM be when two people sit in the front seat 2.70 m from the front of the car, and three people sit in the front of the car back seat 3.65 m from the front? Assume that each person has a mass of 60.0 kg Express your answer to three significant figures and include the appropriate units. CM Value Units Submit My Answers Give Up Incorrect, Try Again, 5 attempts remainingExplanation / Answer
The center of mass is calculated as follows:
Xcm = [Mcxc + (mp+mp)xp + (mp+mp+mp)xp'] / [Mc + 5mp]
= [Mcxc + 2(mp)xp + 3(mp)xp'] / [Mc + 5mp]
= [1150*2.45 + 2*60*2.7 +3*60*3.65] / [1150 + 5*60]
= 2.6196 m
= 2.62 m