Problem 5. a barbell consists of two small balls, each with mass m at the ends of a very low mass rod of length d. it is mounted on the end of a low-mass rigid rod of length b. the apparatus is set in

Problem 5. a barbell consists of two small balls, each with mass m at the ends of a very low mass rod of length

d. it is mounted on the end of a low-mass rigid rod of length

b. the apparatus is set in motion in such a way that although the rod rotates clockwise with angular speed , the barbell maintains its vertical orientation. what is the total angular momentum of the barbell about point b? the positive z-axis points out of the page.