Consider an object at rest on a rough horizontal surface. Which of the following is necessarily correct if we use the model of friction described in the videos and book? The force of friction on the object is smaller than or equal to μg FN, where s is the coefficient of static friction and FN is the normal force exerted on the object by the surface. The force of friction on the object is proportional to the normal force exerted by the surface on the object. The force of friction on any object opposes motion; since the object is at rest, the force of friction is zero. The force of friction on the object is proportional to the object's weight, i.e. Ff = μsmg, where μs is the coefficient of static friction, m is the mass of the object, and g is acceleration due to Earth's gravity.
Consider an object at rest on a rough horizontal surface. Which of the following is necessarily correct if we use the model of friction described in the videos and book? The force of friction on the object is smaller than or equal to μg FN, where s is the coefficient of static friction and FN is the normal force exerted on the object by the surface. The force of friction on the object is proportional to the normal force exerted by the surface on the object. The force of friction on any object opposes motion; since the object is at rest, the force of friction is zero. The force of friction on the object is proportional to the object's weight, i.e. Ff = μsmg, where μs is the coefficient of static friction, m is the mass of the object, and g is acceleration due to Earth's gravity.
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Transcribed Image Text:Consider an object at rest on a rough horizontal
surface. Which of the following is necessarily
correct if we use the model of friction described in
the videos and book?
The force of friction on the object is smaller than or
equal to μg FN, where μs is the coefficient of static
friction and FN is the normal force exerted on the
object by the surface.
The force of friction on the object is proportional to
the normal force exerted by the surface on the object.
The force of friction on any object opposes motion;
since the object is at rest, the force of friction is zero.
The force of friction on the object is proportional to
the object's weight, i.e. Ff = p.mg, where μs is the
coefficient of static friction, m is the mass of the
object, and g is acceleration due to Earth's gravity.
Expert Solution
Step 1
Since at rest static friction acts and static friction is ranges from 0 to limiting friction (usFN)
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