A 5.81 kg ball is attached to the top of a vertical pole with a 2.11 m length of massless string. The ball is struck, causing it to revolve around the pole at a speed of 4.49 m/s in a horizontal circle with the string remaining taut. Calculate the angle ?,θ, between 0∘ and 90∘, that the string makes with the pole. Use g=9.81 m/s2.   θ=     What is the tension T of the string? T=   N

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