4. A bag originally 60 kg of flour is lifted through a vertical distance of 9 m. While it is being lifted, flour is leaking from the bag at such rate that the number of kg lost is proportional to the square root of the distance traversed. If the total loss of the flour is 12 kg, find the amount of work done in lifting the bag.

4. A bag originally 60 kg of flour is lifted through a vertical distance of 9 m. While it is being lifted, flour is leaking from the bag at such rate that the number of kg lost is proportional to the square root of the distance traversed. If the total loss of the flour is 12 kg, find the amount of work done in lifting the bag.

Name: 4. A bag originally 60 kg of flour is lifted through a vertical dista
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Description: 4. A bag originally 60 kg of flour is lifted through a vertical distance of 9 m. Whileit is being lifted, flour is leaking from the bag at such rate that the number of kglost is proportional to the square root of the distance traversed. If the total

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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6. A new event has been proposed for the Winter Olympics. As seen in the figure, an athlete will sprint 100 m, starting from rest, then leap onto a 20 kg bobsled. The person and bobsled will then slide down a 50-m-long ice-covered ramp, sloped at 20°, and into a spring with a carefully calibrated spring constant of 2000 N/m. The athlete who compresses the spring the farthest wins the gold medal. Lisa, whose mass is 40 kg, has been training for this event. She can reach a maximum speed of 12 m/s in the 100 m dash. 20° ww (a) How far will Lisa compress the spring? (b) The Olympic committee has very exact specifications about the shape and angle of the ramp. Is this necessary? What factors about the ramp are important?
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