mercury Venus and Earth complete one revolution around the sun approximately 3 months 7 months and 12 months respectively if planets begin to lineup assuming them to be in the same plane what is the minimum time required by them to align up again
Answers
Answer:
about three months
Step-by-step explanation:
It takes approximately 58.6 days to complete a rotation about its axis, and about three months to do a complete revolution around the Sun. Mercury's gravity is only about 40% of the Earth's gravity, so on Mercury, you'd weigh only 40% of what you weigh now.
Given: Mercury, Venus and Earth complete one revolution around the sun approximately 3 months, 7 months and 12 months, respectively if planets begin to lineup assuming them to be in the same plane.
To find: The minimum time required by them to align up again.
Solution:
To calculate the amount of time taken for them to align again, the L.C.M. of the time taken by the three planets is calculated. The L.C.M. of a given number of values is the least common factor between them.
The L.C.M. of 3, 7 and 12 is 84. So, it takes 84 months for the three planets to align up again. This means it would take 7 years for them to align up again.
Therefore, the minimum time required by them to align up again is 84 months.