Common Forces in Mechanics
Common Forces in Mechanics: Overview
This topic covers concepts such as Classification of Forces, Field Forces, Contact Forces, Normal Reaction Force, Tangential Reaction Force, Tension in Strings, Spring Forces, Variable Forces, Hinge Forces, Frictional Force, etc.
Important Questions on Common Forces in Mechanics
Drag forces are always in the direction of the flow of fluid with respect to the object inside it.
Explain the viscous force in brief.
The force, that is not displacement dependent is:
What are field forces? Give two examples.
A force is said to be variable if its magnitude or direction changes with position or time.
Mention the two ways to vary a variable force.
Our shoulder joint is a hinge joint.
Field forces are also called _____ forces or at-a-distance forces.
What is the field force example?
When a person walks on a surface, the frictional force exerted by the surface on the person is opposite to the direction of motion. True or false?
When walking on ice one should take short steps. Why?
There is a limit beyond which the polishing of a surface increases frictional resistance rather than decreasing it why?
Identify the hinge force among the following.
Explain about hinge force with an example.
Tangential reaction force is a type of contact force.
