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.

Astone weighing 1.5 kilograms is resting on a rock at a height of 20 meters above the ground. the stone rolls down 10 meters and comes to rest on a patch of moss. the gravitational potential energy of the stone on the moss is joules.

Two students, each riding bicycles, start from the same apartment building and ride to the same building on campus, but each takes a different route. the first student rides 1100 m due east and then turns due north and travels another 1430 m before arriving at the destination. the second student heads due north for 1930 m and then turns and heads directly toward the destination.at the turning point, how far is the second student from the destination?

In the illustration, which two simple machines are being used to enable the student to reach the door? a. inclined plane and pulley b lever and wheel-and-axle c pulley and lever d wheel-and axle and inclined plane