GEOLOGY

EARTH SCIENCE

MAGNETISM

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which of the following is an example of contact force?
A
gravity
B
friction
C
Either A or B
D
None of the above
Explanation: 

Detailed explanation-1: -A contact force is a force that acts between the point of contact between two objects. Pushing a car up a hill and kicking a ball are examples of contact force.

Detailed explanation-2: -Friction is a type of contact force. Contact forces are those forces which necessarily require a physical contact. Friction cannot act between two surfaces if they are not touching each other.

Detailed explanation-3: -A force that can cause or change the motion of an object by touching it is called Contact Force. For example, muscular force, frictional force, spring force, tension force, air resistance force etc.

Detailed explanation-4: -The frictional force is a contact force that acts in the opposite direction to the motion of an object. This force can cause objects in motion to come to rest, as they act in the opposite direction to its motion. E.g.-If you roll a ball on a surface, it would come to rest after a short while.

Detailed explanation-5: -Driving of a a vehicle on a surface. Applying brakes to stop a moving vehicle. Skating. Walking on the road. Writing on notebook/ blackboard. Flying of aeroplanes. Drilling a nail into wall. Sliding on a garden slide. More items •02-Mar-2023

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