The two are related by: ds=Rdθ The mass element, dm, can then be expressed in terms of the mass per unit length of the wire and the length, Rdθ, of...The two are related by: ds=Rdθ The mass element, dm, can then be expressed in terms of the mass per unit length of the wire and the length, Rdθ, of the mass element: dm=λds=λRdθ We also need to express the y position of the mass element using θ: y=Rsinθ Now that we have expressed dm and y in terms of θ, we can determi…