Pd 4:
2. Differentiate between contact and noncontact forces with examples.
3. What do you mean by net force? What happens to the body when the net for
acting on it is zero?
Mention the different effects of force giving suitable examples.
What is gravitational force? Mention the factors up on which it depends.
Define electrostatic force. What causes this?
Magnetic force is a non-contact force. Justify this statement.
What causes friction? What is the direction of frictional force?
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Explanation:
Force and Its Effects
On a daily basis, we walk, we run, we play, we sit or stand. In all of these activities, we are changing the state of motion. We are bringing some object to rest or bringing it in motion. What is this called? What’re we actually doing? We’re actually applying ‘Force’ while bringing the object to rest or in motion.
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