The 1-slug mass m rotates around the vertical pole in a horizontal circular path. The angl...

The 1-slug mass m rotates around the vertical pole in a horizontal circular path. The angle θ = 30° and the length of the string is L = 4 ft. What is the magnitude of the velocity of the mass?

Strategy: Notice that the vertical acceleration of the mass is zero. Draw the tree-body diagram of the mass and write Newton’s second law in terms of tangential and normal components.