Flash Card
Escape velocity on a planet is ve. If radius of the planet remains same and mass becomes 4 times, the escape velocity becomes
Though the gravitational force is much weaker than other forces in nature but it controls the Universe because of the ______.
If earth’s satellite is moved from one stable orbit to a father stable orbit, then which of the following quantities increase?
According to Newton's _______ law of motion, a force acting on a body results in its acceleration.
Which is the gravitational potential energy of an object located 20,000m above the earth’s surface ?
If mass of one of two objects is doubled then the gravitational force acting between the two is _______
The square of orbital period of revolution of a planet is directly proportional to the_____of the mean distance of the planet from the sun.
The gravitational force between two bodies is directly proportional to the product of the masses of those bodies and is_________of the distance between them
The earth revolves around the Sun in one year.If the distance between them becomes double,the new period of revolution will be
A boy is whirling a stone tied to a string in a horizontal circular path. If the string breaks, the stone
Acceleration of an object throw upwards is always taken _______as it moves against the force of gravity.
In SI units, the value of G is equal to the _______ between two masses of 1 kg kept 1 m apart.
The minimum velocity of the spacecraft to escape from earth’s gravitational force must be ______.
The value of g on moon 1/6th of its value on the earth. If a person weighs 14 N on the moon’s surface, then the weight of the person on earth’s surface is
Accordinfg to Kepler,the period of revolution of a planet(T) and its mean distance grom the sun(r) are related by the equation