If the earth were a perfect sphere of radius `6.4 xx 10^6` m rotating its axis with the perod of one day `(8.64 xx 10^4 s)`. What is the difference in accelaration due to gravity from poles to equator?

The mass of a planet is 6 times the mass of earth and its radius is 3 times that of the earth . Considering acceleration due to gravity on earth to be 9.8m//s^2 , calculate the value of g on the other planet.

Calculate the value of the universal gravitational constant from the given data. Mass of the Earth = 6xx10^24 kg, Radius of the Earth = 6400 km and the acceleration due to gravity on the surface = 9.8 m//s^2

Solve the following examples / numerical problems: If the acceleration due to gravity on the surface of the earth is 9.8 m/s^2, what will be the acceleration due to gravity on the surface of a planet whose mass and radius both are two times the corresponding quantities for the earth ?

The frequency of an electromagnetic radiation is 2 xx 10^6 Hz . What is its wavelength in metres? (velocity of light is 3 xx 10^8 ms^-1 )

A particle of mass 10 g moves along a circle of radius 6.4 cm with a constant tangential acceleration. What is the magnitude of this acceleration. What is the magnitude of this acceleration, if the kinetic energy of the particle becomes equal to 8xx10^(-4) J by the end of the second revolution after the beginning of the motion?

A spherical conductor of radius 12 cm has a charge of 1.6 xx 10^-7 C distributed uniformly its surface. What is the electric field, at a point 18 cm from the center of the sphere ?

A body is projected vertically upwards with a velocity of 10 ms^-1 and another body is projected simultaneously from the same point with a velocity of 20 m s^-1 at an angle of pi/6 with the horizontal. The distance between the two bodies after one second from the time of projection is (Acceleration due to gravity is 10 ms^-2 )

The radius of a planet is 1/4 of earth’s radius and its acceleration due to gravity is double that of earth’s acceleration due to gravity. How many times will the escape velocity at the planet’s surface be as compared to its value on earth’s surface

The moon's radius is 1//4 that of the earth and its mass 1//80 times that of the earth. If g represents the acceleration due to gravity on the surface of the earth, that on the surface of the moon is