An 02-series single-row deep-groove ball bearing with a 30-mm bore (see tables 11–1 and 11–2 for specifications) is loaded with a 2-kn axial load and a 5-kn radial load. the inner ring rotates at 400 rev/min.

(a) determine the equivalent radial load that will be experienced by this particular bearing.

(b) determine the predicted life (in revolutions) that this bearing could be expected to give in this application with a 99 percent reliability.