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Unformatted text preview: homework 16 – NOORANI, ZOHEB 1 Latest unpenalized work: Feb 25 2008 Mon day 04:00 (after this date you can not make a perfect score). Work cutoff: Feb 26 2008, 4:00 am. Question 1, chap 8, sect 1. part 1 of 1 10 points A 6 kg mass is attached to a light cord that passes over a massless, frictionless pulley. The other end of the cord is attached to a 2 . 2 kg mass. The acceleration of gravity is 9 . 8 m / s 2 . 7 . 2 m ω 6 kg 2 . 2 kg Use conservation of energy to determine the final speed of the first mass after it has fallen (starting from rest) 7 . 2 m. Answer in units of m / s. Question 2, chap 8, sect 1. part 1 of 3 10 points A block starts at rest and slides down a fric tionless track (as shown in the figure below). It leaves the track horizontally, flies through the air, and subsequently strikes the ground. The acceleration of gravity is 9 . 81 m / s 2 . b b b b b b b b b b b b 591 g 4 . 2m 2 . 2m x 9 . 81m / s 2 v What is the speed v of the ball when it leaves the track? Answer in units of m / s. Question 3, chap 8, sect 1. part 2 of 3 10 points What is the horizontal distance x the block travels in the air? Answer in units of m. Question 4, chap 8, sect 1. part 3 of 3 10 points What is the speed of the block when it hits the ground?...
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 Spring '08
 Turner
 Mass, Work, Light, SECT, 2.2 m, 3.7 m

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