Help!!

As a person creates a tension T in a string attached to a small ball of mass m to make the ball revolve at constant speed in a horizontal circle of radius r. The length of the string is known to be L centimeters and the angle 0 it makes with the horizontal (as shown) is also known. Assume air resistance isnegligible. By completing the lettered sections below, you will determine the constant magnitude of the ball's velocity v as it revolves in a horizontal circle. Hint: be careful with your units! (a) Use the Given, find, solution method to show and explain each step of your work (b) Draw a sketch of the small ball attached to the string. Next, clearly draw and label the Free Body Diagram of the ball, showing all the external forces that are acting on it. Each external force must be represented by an arrow that is properly labeled and includes its angle (if any). Be sure to show eXplicitIy the x and y coordinate system you will use. (c) Write an equation that relates the radius r(i.e., the radius of the horizontal circle traced by the small ball's motion) to the length of the string, L. Call this equation [1]. (d) Using the Free body diagram of the ball as your point of reference, clearly and neatly write Newton's complete Second Law equation in the x direction. Next, simplify it using the Given, substitute r from equation [1] into it, and then solve for the tension, T, in terms of the other variables. Call this equation [2]. (9) Using the Free Body Diagram of the ball as your point of reference, clearly and neatly write Newton's complete Second Law equation in the y direction. Next, simplify it using the Given and then solve for the tension, T, in terms of the other variables. Call this equation [3]. (f) Set equation [2] equal to equation [3] and then solve for v in terms of the other variables. Call this equation [4] (g) If L = 45.0 cm and 0 = 20.0, use equation 4 to determine v