King Fahd University of Petroleum & Minerals
Department of Physics

Quiz 4

Name:________________________________________ 		 Id #:____________

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Q:	Consider a horizontal spring with spring constant k=1000 N/m. A moving mass m = 2 kg collides with this spring to a maximum compression of x = 20 cm. If the speed of the mass just before it hits the spring is 5 m/s then

a)	Find the work done by the force of friction during this compression. 

b)	Find the speed of the mass m when it leaves the spring .

King Fahd University of Petroleum & Minerals
Department of Physics

Quiz 4

Name:________________________________________ 		 Id #:____________

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Q:	Consider a vertical spring with spring constant k. A mass m=5 kg is released from rest at a height of 60 cm above this spring. If the mass compresses the spring to a maximum of 20 cm then 

c)	Find the value of the spring constant k.

d)	Find the speed of the mass m just when it leaves the spring .

 King Fahd University of Petroleum & Minerals
Department of Physics

Quiz 4

Name:________________________________________ 		 Id #:____________

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Q:	Consider a vertical spring with spring constant k. A mass m = 4 kg rests on this spring to and compresses it by x =10 cm. The mass is not attached to the spring and the mass-spring system is at rest now.

e)	Find the spring constant k. 

f)	If we compress the spring–mass system an additional 10 cm then find the speed of the mass m when it leaves the spring .