Question:

If R is the radius of the earth and the acceleration due to gravity on the surface of earth h is g=π²m/s² , then the length of the second’s pendulum at a height h = 2R from the surface of earth will be:

(1) 2/9m

(2) 1/9m

(3) 4/9m

(4) 8/9m 

                                                        JEE-2024         

Solution:                
If R is the radius of the earth and the acceleration due to gravity on the surface of earth h is g=π²m/s² , then the length of the second's pendulum at a height h = 2R from the surface of earth will be: (1) 2/9m (2) 1/9m (3) 4/9m (4) 8/9m JEE-2024

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