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Which Fundamental Force(s) Gives Rise to Friction

Question 10
Multiple Choice

Which fundamental force(s) gives rise to friction? A) gravitational force B) electromagnetic force C) weak nuclear force D) strong nuclear force E) (A) and (B)

Related questions
Q 11
An Atomic Force Microscope consists of a cantilever with a very fine tip on one end. The lever is driven by a piezoelectric motor allowing the tip to scan a surface on an atomic scale. As it scans the surface what is the main frictional force between the tip and the surface? A) static B) kinetic C) rolling D) all three E) there is no frictional force
Q 12
Which of the following statements is NOT true about friction? A) µk is less than µs B) µk is independent of the relative speed of the surfaces in the range of about 1 cm/s to several meters per second. C) µk depends on the relative speed of the surfaces at speeds over several meters per second. D) The coefficients of friction depend on the nature of the surfaces. E) The force of static friction depends on the area of contact between the two surfaces.
Q 13
An object with a mass of 5.5 kg is allowed to slide from rest down an inclined plane. The plane makes an angle of 30º with the horizontal and is 72 m long. The coefficient of friction between the plane and the object is 0.35. The speed of the object at the bottom of the plane is A) 5.3 m/s B) 15 m/s C) 24 m/s D) 17 m/s E) 11 m/s
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