Home › AP Physics C: Mechanics › Physics › Laws of Motion › Contact forces such as tension, friction and the…
Contact forces such as tension, friction and the normal force are said to result from:
AGravitational attraction
BNuclear binding energy
CMagnetic field lines
DInteratomic electric forces
Answer & Solution
Correct answer: D. Interatomic electric forces
1. Everyday pushes and pulls have a microscopic origin.
2. Contact forces include tension, friction, the normal force and spring forces.
3. These result from interatomic electric forces.
4. That happens at the microscopic level.
5. So contact forces are electrical in origin.
_Source: OpenStax College Physics for AP Courses 2e (CC BY 4.0), Ch 4 'Dynamics: Force and Newton's Laws of Motion', sections 4.1-4.8_
Related questions
A book rests on a desk. Why are weight and normal force not an action-reaction pair?Two blocks of 2 kg and 3 kg touch on a smooth desk. A 10 N push gives acceleration?A block slides down a smooth 30 degree incline. Its acceleration? (g = 10 m/s²)The same lift accelerates down at 2 m/s². Normal force on the 60 kg person? (g = 10)A lift carrying a 60 kg person accelerates up at 2 m/s². Normal force? (g = 10)The maximum safe speed of a car on a level curve is independent of?A car on a level road has µs = 0.5 and turn radius 20 m. Maximum speed? (g = 10)What supplies centripetal force for a car turning on a level road?