Answer the following questions.
a. What is muscular force?
b. What happens when a rubber band is stretched?
c. Define electrostatic force.
d. Gravitational force can be considered as a non contact force. Give reasons.
e. Distinguish between contact force and non-contact force.
f
Why does an apple, dropped from a height, always fall downwards towards the Earth?
Answers
Answer:
a. the force which is excreted by muscle.
b. muscler force is working.
f. due to gravity.
e. the force working only when a body comes in contact.and the body works without comes in contact.
Answer:
a. muscular force is the force applied using parts of the body like arms or legs. It is force that results due to the action of muscles, and is a contact force, since there is a contact between the surfaces.
b. when a rubber band is streched it changes its shape and when the applied force is removed then it comes back to its shape.
c. It's the attractive or repulsive force between two electrically charged objects. Like charges repel each other while unlike charges attract each other.
d. it's because They need not to be in physical contact for the force to act.
e. contact force-
Contact forces are the forces which are exerted only when there is contact between two bodies.
non contact forces-
non-contact force is a force which acts on an object without coming physically in contact with it.
f. it is because of the force of gravity. gravity pulls all objects towards itself.
Explanation:
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