In Figure P6.33, C and D represent brakes, which can be used to stop the rotation of either gear 4..

In Figure P6.33, C and D represent brakes, which can be
used to stop the rotation of either gear 4 or gear 8, one at a time. All gear
teeth have a 20° pressure angle, stub form. Determine

(a) the maximum permissible number of equally spaced
planet gears 3

(b) the maximum permissible number of teeth on planet
gear 6

(c) the speed and direction of shaft B when shaft A is
rotating at 800 rpm CW, while

(i) brake C holds gear 4 fixed

(ii) brake D holds gear 8 fixed

N2 = 16; N4 = 50; N5 =
30; N8 = 80