(In your own words) 1. What is your understanding of the term Inertia ? How is i
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Question
(In your own words)
1. What is your understanding of the term Inertia ?
How is it applied in common speech to things other than the physical ?
2. Give an example of Newton's first Law from your own exerience.
3. Since the moon's gravity is less than the earth's, if you gave a bowling ball a push with the same force on the earth and then on the moon what would you expect to see relative to the two accelerations produced, and why ?
4. If an object is in motion can it be in equilibrium. Explain on the basis of Newton's 3rd law.
Explanation / Answer
1)
inertia is the property of body by which it resists to any change in its state of motion.
It is used as a sort of resistance to change or lack of activity of anything in common speech. Such as "Throughout the early 1930s the labor left constantly tried to overcome the inertia of the trade union leaders"
2)
An example is when you are sitting in a car or bus at rest and suddenly it starts to speed up you feel a jolt and after some time the jolt is over. this is due to the inertia of you body and by Newton's 1st Law your body tries to be in its initial state (ie at rest) and after some time until and unless the bus or car descelrates you dont jolt...
3)
A planet's gravity is directed normal to the ground.So, we will see change in acceleration (if any) in this normal direction only, So, if you push the ball parallel to the ground, the same acceleration will result in both cases in this direction only, But if in normal direction, the acceleration will depend upon the dircetion of the applied force. It can cancel out the gravity, produce an upward lift or downward drop depending on the direction of applied force
4)
Yes it can be in equilibrium. By newton's third law, if equal and opposite forces act on the body then the net force on it is 0. So, it can be in equilibrium
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