utah instructure.com Quiz: Quiz 2 Please answer the 10 questions regarding the f
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utah instructure.com Quiz: Quiz 2 Please answer the 10 questions regarding the following scenarios. I have not put a time limit other than the due date of Friday at 11:59PM. Hopefully this quiz will require less than 1 hour of your time. Future quizzes may require an access code obtain during discussion classes and also have a time limit. VQue Que V Que V Ques Ques Questions 1-5 Refer to the following situation The moon has mass MM-7.3 x 1022 kg. It rotates about Earth in a circular orbit of radius RM-384 x 108 m with period T 27.3 days. The Earth has mass Me-6.0x 1024 kg and radius Re 6.4x10 m. Time Elapsed Attempt due: Sep 59 Minutes,4 Questions 6 and 7 refer to the following scenario Three identical masses M connected by massless ropes are being pulled to the right with a 9 N force across a horizontal, frictionless surface. The tension in the center rope is T les rence orations Questions 8-10 refer to the following scenario A block of mass M is attached to the ceiling of an elevator by two strings a Gallery 01 T. T.Explanation / Answer
1] Distance travelled by moon in one day = 2pi r *1/T = 2pi*3.84e8/27.3 = 88378870 m = 88380 km
2] Angular speed = 2pi/T = 2pi/[27.3*24] = 0.0096 rad/hour
3] linear speed = 2pir/T = 2pi*3.84e8/[27.3*24*3600] = 1022.9 m/s
4] centripetal acceleration a = v^2/r = 1022.9^2/3.84e8 = 0.0027 m/s^2
5] Force acting = ma = 7.3e22*0.00272 = 1.99e20 N
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