You have been operating your HMMWV in muddy terrain. In addition to normal after operation PMCS, you must clean mud from the vehicle and apply lithium grease to what component to prevent it from binding?

The astronauts on the space shuttle flights experienced an acceleration of 29 m/s2 (about 3 "g's") during lift-off. what upward force must the astronaut's seat apply to the astronaut in order to cause this acceleration? assume the astronaut's mass is 70 kg, and compute this force when the acceleration is near the earth's surface so their weight equals latex: mg m g .