The universal law of gravitation was postulated by
There is no atmosphere on moon as
The constant G
The small size of the gravitational constant G tells you that the gravitational force is actually quite weak compared to other known forces like the electric, magnetic and nuclear forces.
Acceleration due to gravity is
If the radius of earth were to shrink by 1%, its mass remaining the same, the acceleration due to gravity on earth’s surface would
An apple and a stone dropped from certain height accelerates
The gravitational force between two bodies does not depend on
Weight of 1 kg is
10 kg wt equals
A body at rest having uniform acceleration is
The correct option is Option C.
A body at rest having uniform acceleration is any body thrown vertically up against gravity.
When a body is thrown vertically upwards, at the highest point only velocity is zero because the acceleration due to gravitational force is acting downward continuously and that is the reason for velocity being zero at the highest point, hence velocity is zero because of the acceleration.
At which of the following locations is the value of g largest?
acceleration due to gravity varies with
Two objects of different masses falling freely near the surface of moon would
When an object is under free fall, its acceleration depends only on the acceleration due to gravity and mass has no role to play. Due to this; irrespective of their masses, the object under free fall with have the same velocity at any instant.
Two particles are placed at some distance. If the mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will be
In the relation , the quantity G
The force of attraction between two unit point masses separated by a unit distance is called
Two particles are placed at some distance. If mass of each of the two particles is doubled, keeping the distance between them unchanged, the value of gravitational force between them will become/remain
An apple falls from a tree because of gravitational attraction between the earth and apple. If F1 is the magnitude of force exerted by the earth on the apple and F2 is the magnitude of force exerted by apple on earth, then
so we can see that f is equal to f₂
The weight of an object at the centre of the earth of radius R is
The weight of the body at the surface of the earth is equal to zero. The accelertion due to gravity is maximum on the surface of the earth and as we towards the centre of the equator it becomes zero.
The acceleration due to gravity varies due to the shape of the earth. The radius of the earth is more at the equator than at the poles.
Thus, the value of g at the centre of the earth is zero.
Freely falling objects weight ._______.
An object kept in a lift which falls freely , weighs zero on the weighing machine , but its actual weight is still mg. This happens because the normal reaction force Exerted on the object in the lift is equal to mg,which in turn equals the weight of the object.