Advertisements
Advertisements
प्रश्न
The value of gravitational acceleration at the centre of earth is zero.
विकल्प
Right
Wrong
उत्तर
The value of gravitational acceleration at the centre of earth is zero- Right
APPEARS IN
संबंधित प्रश्न
A stone is thrown vertically upward with an initial velocity of 40 m/s. Taking g = 10 m/s2, find the maximum height reached by the stone. What is the net displacement and the total distance covered by the stone?
Which force is responsible for the moon revolving round the earth ?
State whether the following statement is true or false :
A falling stone also attracts the earth.
State whether the following statement is true or false :
The acceleration due to gravity acting on a freely falling body is directly proportional to the mass of the body.
Explain what is meant by the equation :
`g= Gxxm/r^2`
where the symbols have their usual meanings.
During a free fall, will heavier objects accelerate more than lighter ones ?
Give reason for the following :
The force of gravitation between two cricket balls is extremely small but that between a cricket ball and the earth is extremely large.
Explain why, a wide steel belt is provided over the wheels of an army tank.
Name the force which stops you falling through the floor.
What will be the weight of a person on earth, who weighs 9N on the moon?
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
What force, in newton, your muscles need to apply to hold a mass of 5 kg in your hand? State the assumption.
The value of gravitational acceleration (g) is ________.
Write acceleration due to gravity value on the surface of Earth.
The mass of planet ‘X” is four times that of the earth and its radius is double the radius of the earth. The escape velocity of a body from the earth is 11.2 × 103 m/s. Find the escape velocity of a body from the planet 'X’.
The mass and weight of an object on earth are 5 kg and 49 N respectively. What will be their values on the moon? Assume that the acceleration due to gravity on the moon is 1/6th of that on the earth.
