King Fahd University of Petroleum & Minerals
Department of Physics

Quiz 5

Name:________________________________________ 		 Id #:____________

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Q:	Consider an L shaped uniform piece of wood whose thickness is 2cm and density 
           d = 0.7g/cm**3. 

a) Find the axes of symmetry and draw them on the figure ?

b) Find the coordinates center of mass of this object using the coordinate axes shown on the figure?

King Fahd University of Petroleum & Minerals
Department of Physics

Quiz 5

Name:________________________________________ 		 Id #:____________

------------------------------------------------------------------------------------------------------------------------

Q:	Consider an L shaped uniform piece of wood whose thickness is 2cm and density 
           d = 0.7g/cm**3. 

a) Find the axes of symmetry and draw them on the figure ?

b) Find the coordinates center of mass of this object using the coordinate axes shown on the figure?

King Fahd University of Petroleum & Minerals
Department of Physics

Quiz 5

Name:________________________________________ 			 Id #:____________

------------------------------------------------------------------------------------------------------------------------

Q:	The coefficient of friction between the 2 Kg mass and the horizontal surface is 0.2. The pulley and cord are massless and the system starts from REST

a)	Find the change in the gravitational potential energy of both masses when the 4 Kg mass falls by 2 m ?

b) Find the speed of the 4 Kg mass when it has fallen 2 m ?  ( specify the system to which you apply the mechanical energy theorem )

King Fahd University of Petroleum & Minerals
Department of Physics

Quiz 5

Name:________________________________________ 			 Id #:____________

------------------------------------------------------------------------------------------------------------------------

Q:	The coefficient of friction between the 4 Kg mass and the horizontal surface is 0.2. The pulley and cord are massless and the system starts from REST

b)	Find the change in the gravitational potential energy of both masses when the 2 Kg mass falls by 2 m ?

b) Find the speed of the 2 Kg mass when it has fallen 2 m ?  ( specify the system to which you apply the mechanical energy theorem )