A1400 kg wrecking ball hangs from a 12-m-long cable. the ball is pulled back until the cable makes an angle of 28.0 ∘ with the vertical.

If one were to put the y value into the equation, they could find out what x is for a certain value of y.  putting in the value of y (1), we get the equation: 1=4x-12=4xx=0.5this means that the value of x when why is 1 is x=0.5

Since the pully is a simple machine so the mechanical advantage is a 1