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प्रश्न
What do you understand by the free fall?
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उत्तर
Free fall means motion of a body under the gravity of earth only.
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संबंधित प्रश्न
Gravitational force acts on all objects in proportion to their masses. Why then, a heavy object does not fall faster than a light object?
Explain what is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.
An object thrown vertically upwards reaches a height of 500 m. What was its initial velocity? How long will the object take to come back to the earth? Assume g = 10 m/s2.
What would be the value of ‘g’ on the surface of the earth if its mass was twice and its radius half of what it is now?
A force of 15 N acts on a body of mass 2 kg. Calculate the acceleration produced.
A force acts for 10 s on a stationary body of mass 100 kg, after which the force ceases to act. The body moves through a distance of 100 m in the next 5 s. Calculate : The acceleration produced by the force
Figure shows the velocity-time graph of a particle of mass 100 g moving in a straight line. Calculate the force acting on the particle.
(Hint : Acceleration = Slope of the v-t graph)
Define the term acceleration due to gravity? Write its S.I. unit.
What is escape velocity?
Write scientific reasons.
The value of gravitational acceleration (g) is taken to be -g when studying the motion of an object thrown upwards in a straight line.
