A force of 10 N is needed to set a 250 N box across the floor. What is the coefficient of friction between box and floor? a) 0.04 b) 0.08 c) 0.25 D) 2.50 6.
A force of 10 N is needed to set a 250 N box across the floor. What is the coefficient of friction between box and floor? a) 0.04 b) 0.08 c) 0.25 D) 2.50 6.
Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter6: Applications Of Newton’s Laws Of Motion
Section6.3: A Model For Static Friction
Problem 6.2CE: A box rests on a steel surface. Four sides of the box are made of aluminum, and the other two sides...
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A force of 10 N is needed to set a 250 N box across the floor. What is the coefficient of friction between box and floor?
a) 0.04
b) 0.08
c) 0.25
D) 2.50
6. In Newton's third law , the action and reaction forces
a) act on the same body.
b) act on different bodies.
C) are inversely proportional.
D) are perpendicular to each other.
7. How is it possible for a large force to produce a small or even zero torque?
a) When the force produces clockwise rotation.
b) When the force produces counter-clockwise rotation.
c) When the lever arm is perpendicular to the line of action of the force.
d.)When the force passes through the point of rotation.
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