11.An object at the end of a string is used as a conical pendulum. Which of the following would you need to know in order to calculate the tension in the string?
(A) The angle
(B) The mass of the string
(C) The mass of the object
(D) The frequency of its motion

A200-n force is applied to the foot-operated air pump. the return spring s exerts a 2.6-n·m moment on member oba for this position. determine the corresponding compression force c in the cylinder bd. if the diameter of the piston in the cylinder is 40 mm, estimate the air pressure generated for these conditions. state any assumptions. enter a positive number for the compression force c.