Question

The earth revolves around the sun in a circular path with a speed of 30km/s. What is the radial acceleration directed towards the sun.
10th problem, The answer is given but I need the solution

Answer 1

Answer:

The answer is  5.98 x 10 ^-3 m/s2.

Explanation:

Given data:

Speed of revolution = 30Km/s

                               = 3 x 10 ^4 m/s

Time of revolution = One year = 356 days (convert into seconds)

                            = 365 x 24 x 60 x 60 = 3.5 x 10 ^7 seconds

The formula of radial acceleration:

                     ac = V2 / r

Distance covered by the earth around the sun will be equal to the circumference of orbit.

      Speed x Time ( V.T ) = 2πr

                               r = V.T/2π  

Since                      ac = V2 / r = V ^2 x 2π/V.T  

                              ac = 2πV /T

                              ac = 2 x 3.14 x 3 x 10 ^4/ 3.5 x 10 ^7  

                              ac = 5.98 x 10 ^-3 m/s2

Answer 2

Answer:

hope it is helpful......