Squeezing a piece of lemon in between the fingers is an example of
electrostatic force
nuclear force
magnetic force
contact force
Squeezing a piece of lemon in between the fingers is an example of muscular force, which is a contact force.
Classify the following amongst contact and non-contact forces: (a) frictional force, (b) Normal reaction (c) force of tension in a string, (d) gravitational force, (e) electrostatic force, (f) magnetic force.