Here, we have to calculate the density of steel.

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Here, we have to find the magnitude of unknown values i.e. F2 and F3.

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We have to calculate the surface area of the piston where force is applied.

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Here, we have to calculate pressure.

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A balloon filled with hydrogen rises up because when the balloon is filled with hydrogen, the weight of the air displaced is greater than the weight of .....

The bulb of hydrometer is filled with a heavy substance because the heavy bulb helps the hydrometer to float .....

Here, Given,  In first case, The mass ofone object = m1 The mass of another object = m2 Gravitational force between them = F = 2N The distance between them = d We have, F = (Gm1m2 ) / d2...................(i) Again, In second case, The mass of .....

Here,  Given, Mass of Jupiter (M) = 1.9 х 1027 kg The radius of Jupiter (R) = 71х 106 m Acceleration due to the gravity of Jupiter (g) =? Universal gravitational constant (G) = 6.67 х 10-11Nm2kg-2 We have, g = .....

Here, Given, The mass ofEarth (m1) = 6х 1024kg The mass of Mars (m2) = 6 х 1023kg Gravitational between Earth and Mars (F) = 6.67х 1016 N Universal gravitational constant (G) = 6.67 х 10-11Nm2kg-2 Distance between .....

Here, Given, The mass of Sun (m1) = 2 х 1030 kg The mass of Jupiter (m2) = 1.9х 1027 kg Gravitational between Sun and Jupiter (F) = 4.166х 1023 N Universal gravitational constant (G) = 6.67 х 10-11Nm2kg-2 A distance .....

Here, Given, Radius of earth (R) = 6400 km                                = 6400 х 1000 m             .....

Here,  Given,  Radius of earth (R) = 6400 km                                 = 6400 х 1000 m        .....

Let a body of mass 'm' be placed on the surface of the earth of mass 'M'. The distance between them can be taken to be taken be equal to the radius 'R' of the earth. The weight 'W' of the .....

Let M and R be the mass and radius of the earth respectively. The value of acceleration gravity at the surface of the earth is given by : g = (GM / R2)......... (i) Where G is the universal gravitational constant. If g1 .....

A falling parachute has no acceleration when the gravity of the earth and the upthrust of the air acting on the parachute are equal in magnitude but opposite in .....

The gravitational constant is numerically equal to the force of gravitation when the bodies have unit mass and the distance between the bodies is .....

The gravitational force between two bodies is directly proportional to the product of their .....

A body is said to be weightless when it appears to have no .....

The force of gravitation between two bodies is inversely proportional to the square of the distance between their .....

Because in the surface of the moon, there is no atmosphere and due to the lack of air resistance all the falling bodies gain the same acceleration due to .....

The uniform acceleration produced in a freely falling body due to the pull of gravity of the earth is known as acceleration due to .....

The attractive force of the earth on an object towards its centre is called .....

Newton’s universal law of gravitation states that everybody in this universe attracts every other body with a force which is directly proportional to the product of their masses and inversely proportional to the .....

The two differences between mass and weight are: 

Mass .....

In an artificial satellite orbiting around the earth, there are two forces acting on it: i) The force of gravity of the earth acting towards the centre of the orbit and  ii) The centrifugal force due to the motion .....

When a body starts to fall, its initial velocity is zero. While falling, velocity of the body increases constantly with time. The increase in its velocity depends upon the acceleratio due to gravity at the .....

The two effects of gravitation are: 1. Presence of atmosphere around the earth 2. Stability of planets around the sun in the solar .....

Before the time of Galileo, it was believed that the acceleration of a body depends on its mass. Galileo dropped two spheres of different masses from the Leaning Tower of Pisa. He noted the time taken by the spheres to reach the .....

Both the stones will reach the surface of the moon at the same time because there is no air on the moon and both the stones fall freely with the acceleration due to gravity of the .....

The value of gravitational constant is 6.67 x 10-11Nm2/kg2.  It means the gravitational force of attraction between two unit masses which are separated by unit distance is 6.67 x .....