Question

The assembly shown is formed of uniform rod. For what value of the length l will the mass cednter be located at a height of 0.74 r above the supporting surface?

Answer 1

Consider the body as two parts, semi-circular shell part and the closed semi-circular end parts.

Obtain the surface length of closed semi-circular end parts.

Here, r is the radius of semi-circular end part.

Obtain the of surface length semi-circular shell part.

Here, l is the length of the shell.