ch10-p084 - 84. The angular displacements of disks A and B...

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
84. The angular displacements of disks A and B can be written as: 2 1 ,. 2 AA B B tt θω θ α == (a) The time when AB θθ = is given by 2 2 2 1 2(9.5 rad/s) 8.6 s. 2 (2.2 rad/s ) A B t ω ωα = ¡ = (b) The difference in the angular displacement is 22 1 9.5 1.1 . 2 A B ttt t θθ θ ω Δ= − = − = For their reference lines to align momentarily, we only require 2 N θπ Δ= , where N is an integer. The quadratic equation can be readily solve to yield
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.
Ask a homework question - tutors are online