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Contact Forces

Question 6 Wh...

Question

Question 6
Which one of the following forces is a contact force?

(a) force of gravity
(b) force of friction
(c) magnetic force
(d) electrostatic force

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Solution

(b) force of friction

Friction is always present when two bodies are in contact and it is absent when they are not in contact.

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Similar questions

Which of the following is a contact force:
(a) electrostatic force (b) gravitational force
(c) Frictional force (d) magnetic force.

Q. Question 5
Two objects repel each other. This repulsion could be due to

(a) frictional force only
(b) electrostatic force only
(c) magnetic force only
(d) either a magnetic or an electrostatic force

Which of the following is not a no-contact force ?
(a) electrostatic force (b) gravitational force (c) frictional force (d) magnetic 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.

Q. Question 3
During dry weather, while combing hair, sometimes we experience hair flying apart. The force responsible for this is

(a) force of gravity
(b) electrostatic force
(c) force of friction
(d) magnetic force

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