Assertion: friction's value | /r/HasProperty | proportional
Facets:
value: to the coefficient of static friction
type: OTHER
value: to the normal force
type: OTHER
Source sentences:
text: Upon closer investigation, we find that the maximum value of static friction and the force of kinetic friction are each proportional to the normal force; that is,
text: For static friction, the friction force F exerted between the surfaces having no relative motion cannot exceed a value that is proportional to the product of the normal force N and the coefficient of static friction
text: The friction force F exerted between the moving surfaces is equal to a value that is proportional to the product of the normal force N and the coefficient of kinetic friction