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homework friction NSLM and Gravitation September 9, 2010

# homework friction NSLM and Gravitation September 9, 2010 -...

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1.   A 15-kg box is sliding up a 40 o  inclined plane with an acceleration of 2 m/s 2 .  The coefficient of kinetic friction  between the box and the plane is 0.6.  In the figure below, what should be the value of the hanging mass m 2 The pulley is frictionless. Solution: FBD 1: FBD 2:   HOMEWORK NO.3 Friction, Newton’s Second Law of Motion, Circular Motion and Gravitation PHY10 First Term 10-11 NAME / SECTION FUJITA, MA. JOSEPHINE MIKA C. / A2 m 2 θ constant acceleration T T

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2.  A 550N physics student stands on a bathroom scale in an elevator.  As the elevator starts moving, the scale reads  450 N.   a) Find the acceleration of the elevator (magnitude and direction).  b) What is the acceleration if the scale reads 670 N?  c) If the scale reads zero, should the student worry?  Explain.
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homework friction NSLM and Gravitation September 9, 2010 -...

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