Differentiate between contact and non-contact
forces.
Answers
Answer:
A non-contact force is a force which acts on an object without coming physically in contact with it. In contrast a contact force is a force applied to a body by another body that is in contact with it.
Contact Forces:
→ The force that acts upon a body when two bodies are in contact with each other is known as contact force.
→ A contact force always require more than one object.
→ They do no take place when the objects are distant from each other.
→ Contact forces are usually not natural forces. A few exceptions include frictional force.
→ For example: Frictional force, muscular force etc.
Non-Contact Forces:
→ The force that acts upon a body without any direct contact is known as non-contact forces.
→ A non-contact force need not always require more than one object.
→ They can take place when the objects are distant from each other.
→ Non-contact are usually natural forces.
→ For example: Magnetic force, gravitational force, electrostatic force etc.
Knowledge Bytes:
→ Contact and non - contact forces are classification of force. Even though they have a great many differences, the effects of force are same. Some effects of force are:
✳ Force changes the state of motion of an object - Force can move an object from rest and stop a moving object.
✳ It can change the speed and direction of an object.
✳ Force can change the shape as well as size of an object.