20
QuizMultiple Choice

One-Dimensional Motion and Forces — Test

Question 20 • Physics

Which best describes the friction acting on the piano?

Answer
A
The static frictional force is greater than the kinetic frictional force, so the static frictional force is greater than 1200 N.
B
The static and kinetic frictional forces are equal, so the static frictional force is equal to 1200 N.
C
The kinetic frictional force is greater than the static frictional force, so the kinetic frictional force is greater than 1200 N.
D
The static and kinetic friction are both equal to the gravitational force of 2200 N.
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