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प्रश्न
Why does the velocity of a stone thrown vertically upwards decreases?
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उत्तर
Velocity of a stone thrown vertically upwards decrease because acceleration due to gravity is acting on downward direction.
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संबंधित प्रश्न
What is the value of gravitational constant G (i) on the earth, and (ii) on the moon ?
State whether the following statement is true or false :
The value of G on the moon is about one-sixth `(1/6)`of the value of G on the earth.
The value of gravitational acceleration (g) is ________ at the equator.
The value of g is highest at the equator.
The value of G varies from place to place.
Write scientific reason.
The weight of an object varies on different planets.
Write scientific reason.
The value of g at the centre of the earth is zero.
The mass of a body on the surface of the earth is 10 kg. The mass of the same body on the surface on the moon is `"g"_"m" = 1/6 "g"_"e"`, where gm, ge acceleration due to gravity on the surface of the moon and the earth respectively.
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R = radius of the earth, 'g' = acceleration due to gravity, n = integer
The radius of the earth is. 6400 km and that of mars is 3200 km. The mass of the earth is about 10 times the mass of mars. Weight of the object on the earth is 200 N. What will be its weight on the mars?
A wire AB is carrying steady current 'I1' and is kept on the table. Another wire CD carrying current 'I2' is held parallel and directly above AB at a distance 'r'. When wire CD is left free and it remains suspended at its position, its mass per unit length is (g =acceleration due to gravity) ____________.
How does the force of attraction between the two bodies depend upon their masses and the distance between them? A student thought that two bricks tied together would fall faster than a single one under the action of gravity. Do you agree with his hypothesis or not? Comment.
A body is thrown from the surface of the earth with velocity 'u' m/s. The maximum height in m above the surface of the earth upto which it will reach is ______.
(R = radius of earth, g = acceleration due to gravity)
The value of gravitational acceleration g at a height h above the earth's surface is `"g"/4`, then ______. (R = radius of earth)
The mass of a spaceship is 1000 kg. It is to be launched from the earth's surface out into free space. The value of g and R are 10 m/s2 and 6400 km, respectively. The required energy for this work will be ______.
When equating the gravitational force with Newton's Second Law force to derive g, which term cancels out?
Where on Earth is the value of acceleration due to gravity the highest?
