At the beginning of a new school term, a student starts a box of books moving by applying a force of 90 N with his foot. A) If the box has a mass of 20 kg find the coefficient of static Friction between the box and the floor. B) How much force would the student have to apply to move the box at a constant velocity if the coefficient of kinetic friction is 0.35? C) if the mass of the box was increased to 55 kg, how much force would be needed to start the box in motion? 46

College Physics
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Chapter1: Units, Trigonometry. And Vectors
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For each problem draw a free body diagram and find the solution using FSP'S.
1. At the beginning of a new school term, a student starts a box of books moving by applying a
force of 90 N with his foot. A) If the box has a mass of 20 kg find the coefficient of static
friction between the box and the floor. B) How much force would the student have to apply to
move the box at a constant velocity if the coefficient of kinetic friction is 0.35? C) if the mass
of the box was increased to 55 kg, how much force would be needed to start the box in
motion?
a) 0.46
b) 68.67 N
c) 248.19 N
KE 四G
GPU
ASUS ZenBook
Transcribed Image Text:For each problem draw a free body diagram and find the solution using FSP'S. 1. At the beginning of a new school term, a student starts a box of books moving by applying a force of 90 N with his foot. A) If the box has a mass of 20 kg find the coefficient of static friction between the box and the floor. B) How much force would the student have to apply to move the box at a constant velocity if the coefficient of kinetic friction is 0.35? C) if the mass of the box was increased to 55 kg, how much force would be needed to start the box in motion? a) 0.46 b) 68.67 N c) 248.19 N KE 四G GPU ASUS ZenBook
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