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Yogita Ingle 5 years, 8 months ago
Impulse
- Impulse is defined as a force multiplied by time it acts over.
- For example: Tennis racket strikes a ball, an impulse is applied to the ball. The racket puts a force on the ball for a short time period.
Posted by Anshul Bansal 5 years, 8 months ago
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Yogita Ingle 5 years, 8 months ago
Impulse is the big force acting for a very small interval of time. It is represented by J⃗ J→.
Impulse Formula is articulated as
J= F × t
Where,
- Force applied is given as F
- Time interval throughout which force is applied is given as t.
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Yogita Ingle 5 years, 8 months ago
Gravitational Constant: Cavendish experiment
- Cavendish performed an experiment to calculate the value of G.
- To calculate the value of G he took a wooden plank and attached two 2 balls on either side of the plank and hung this with a thin thread from the top.
- He introduced 2 very big balls and those balls are near the smaller balls.
- He observed that the small balls got attracted to big balls and wooden plank started rotating and as a result the thin thread started twisting.
- This happened because of force of attraction between the small balls and bigger balls.
- He observed that :-
- Plank rotates till twisting force becomes equal to the gravitational force between the balls.
? = G m1m2/r2
LƟ = G m1m2/r2
- By using the above equation he calculated the value of G,
- G= 6.67x10-11Nm2/kg2
- Units of G : Nm2/kg2
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Anand Kumar Verma 5 years, 8 months ago
1Thank You