The non contact force is : (a) force of reaction (b) force due to gravity (c) tension in string (d) force of friction
Force of gravity(option b) is a non- 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.
(a) Define frictional force (or friction)
(b) Explain why frictional force is said to be a contact force.
(c) Explain why magnetic force is said to be a non-contact force.
Which of the following is a contact force: (a) electrostatic force (b) gravitational force (c) Frictional force (d) magnetic force.