Advertisements
Advertisements
प्रश्न
Define the term acceleration due to gravity? Write its S.I. unit.
उत्तर
The rate at which the velocity of a freely falling body increases is called acceleration due to gravity. Its S.I. unit is m/s2.
APPEARS IN
संबंधित प्रश्न
During a free fall, will heavier objects accelerate more than lighter ones ?
The values of g at six distances A, B, C, D, E and F from the surface of the earth are found to be 3.08 m/s2, 9.23 m/s2, 0.57 m/s2, 7.34 m/s2, 0.30 m/s2 and 1.49 m/s2, respectively.
(a) Arrange these values of g according to the increasing distances from the surface of the earth (keeping the value of g nearest to the surface of the earth first)
(b) If the value of distance F be 10000 km from the surface of the earth, state whether this distance is deep . inside the earth or high up in the sky. Give reason for your answer.
Explain why, a wide steel belt is provided over the wheels of an army tank.
Choose one or more correct alternatives.
Which of the forces involved in dragging a heavy object on a smooth, horizontal surface, have the same magnitude?
- The horizontal applied force
- gravitational force
- reaction force in vertical direction
- force of friction
What is the acceleration due to gravity?
What is escape velocity?
In vacuum, all freely falling objects have the same force. Is it true?
Distinguish between:
Universal gravitational constant - Gravitational acceleration of earth.
Write a short note.
Escape Velocity
Calculate the escape velocity on the surface of the moon given the mass and radius of the moon to be 7.34 × 1022 kg and 1.74 × 106 m respectively.
(Given: G = 6.67 × 10-11 Nm2/kg2)
