Number of days taken by the Mars to orbit around the Sun.

Calculate the centripetal acceleration of the Earth which orbits around the Sun. The Sun to Earth distance is approximately 150 million km. (Assume the orbit of Earth to be circular)

The time taken by Mars to revolve round the sun is 1.88 years. Find the ratio of average distance between mars and the sun to that between the earth and the sun.

Earth orbit around Sun In-----days.

The earth takes almost ………….. days to revolve around the Sun.

The planet Mars has two moons, phobos and delmos. (i) phobos has a period 7 hours, 39 minutes and an orbital radius of 9.4 xx 103 km. Calculate the mass of mars. (ii) Assume that earth and mars move in circular orbits around the sun, with the martian orbit being 1.52 times the orbital radius of the earth. What is the length of the martian year in days ?

Consider a planet moving in an elliptical orbit around the Sun. The work done on the planet by the gravitational force of the Sun

A planet revolves in an elliptical orbit around the Sun. The semi-major and semi-minor axis are A and B. How time-period is related with them?