Flash Card
on the value of acceleration due to gravity is ⅙ times that on the surface of the earth.
Escape velocity on a planet is ve. If radius of the planet remains same and mass becomes 4 times, the escape velocity becomes
If earth’s satellite is moved from one stable orbit to a father stable orbit, then which of the following quantities increase?
The orbit of a planet is an_______with the Sun at________
The value of universal gravitational constant (G) in SI unit is _______.
When an object is taken from earth to the moon,
If mass of one of two objects is doubled then the gravitational force acting between the two is _______
When a feather and a heavy stone are dropped from a same height at the same time in vacuum
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
The direction of the acceleration due to gravity of any object is always_______.
If the gravitational attraction of the earth suddenly disappears, then
According to Newton’s first law of motion, higher the mass _______is the inertia.
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.
In SI units, the value of G is equal to the _______ between two masses of 1 kg kept 1 m apart.
Though the gravitational force is much weaker than other forces in nature but it controls the Universe because of the ______.
Which of the following is example of free fall?
Acceleration of an object throw upwards is always taken _______as it moves against the force of gravity.
When distance between two objects is decreased by d times, the gravitational force between them increases 4 times. The value of d 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
Force which is directed towards the center of the circle is ______.
Medium in which true free fall is possible is ______.
Which of the following law states areal velocity of the planet remains constant?
Value of acceleration due to gravity (g)_________as we go deep insider the earth.
Escape velocity of a satellite depends on the
What would happen to the moon if the earth stops exerting force of attraction on it?
In which of the following cases centripetal force is not experienced?
The force of attraction between two-unit point masses separated by a unit distance equals
The minimum velocity of the spacecraft to escape from earth’s gravitational force must be ______.
A ______ is necessary to change the speed as well as the direction of motion an object.
Which of the following is the S.I. unit of universal gravitational constant?
The value of acceleration due to gravity
Which of the following in NOT a characteristic of gravitational force?
The earth revolves around the Sun in one year.If the distance between them becomes double,the new period of revolution will be
Where will it be profitable to purchase 1 kilogram sugar?
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
According to Newton's _______ law of motion, a force acting on a body results in its acceleration.
Which of the following statements about the gravitational constant is true?
A boy is whirling a stone tied to a string in a horizontal circular path. If the string breaks, the stone
Uniform circular motion is possible only ______.
The tidal waves in the sea are primarily due to gravitational effect of
Which is the gravitational potential energy of an object located 20,000m above the earth’s surface ?
Law of gravitation gives the gravitational force between__________
