If two objects of 45 kg and 47 kg respectively are attracted towards each other by a gravitational force fo `250xx10^-7`N,find the distance between their centres.

If two objects of masses 500kg and 84kg resprecitvley are at a distance of 2m apart from each other.Find gravitational force between them?

Two circles with diameters 6 cm and 9 cm touch each other externally.Find the distance between their centres.

Two circles of radii 5.5cm and 4.2cm touch each other externally. Find the distance between their centres.

Two circles having radii 3.5 cm and 4.8 cm touch each other internally.Find the distance between their centres.

If two circles with radii 8 and 3 respectively touch externally, then find the distance between their centres.

The mass of the Earth and Moon are 6xx10^34 kg and 7.4xx10^22 kg respectively.The distance between them is 3.84xx10^5 km.Calculate the gravitational force of attraction between the two? G= 6.7xx10^11Nm^2//kg^2 .

What happens to the gravitational force between two objects when the distance between them is: (i) doubled? (ii) halved?

Solve the following examples / numerical problems: The masses of the earth and the moon are 6 xx 10^24 kg and 7.4 xx 10^22 kg, respectively. The distance between them is 3.84 xx 10^5 km. Calculate the gravitational force of attraction between the two use G = 6.7 xx 10^-11 N-m^2 kg^-2.

The masses of earth and jupiter are 6xx10^24 kg " and " 1.9xx10^27 kg, respectively. The distance between them 6.2xx10^11 m. calculate the gravitational force of attraction between the two . Use G=6.7xx10^11 Nm^2kg^(-2)

The masses of two spheres are 10 kg and 20 kg respectively. If the distance between their centres is 100 m , find the magnitude of the gravitational force betweem them.