List of practice Questions

A body weighs 200 N on the surface of the earth. How much will it weigh half way down to the centre of the earth?
The moment of the force, \(\overrightarrow{F}=4\hat{i}+5\hat{j}-6\hat{k}\) at (2, 0, -3), about the point (2, -2, -2), is given by
The x and y coordinates of the particle at any time are x = 5t – 2t2 and y = 10t respectively, where x and y are in meters and t in seconds. The acceleration of the particle at t = 2 s is
The acceleration due to gravity at a height 1 km above the earth is the same as at a depth d below the surface of earth. Then