College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

Exercise 124

A rocket is far away from all planets and stars, so gravity is not a consideration, it is using its rocket engines to accelerate upward with an acceleration a = 9.80 m/s 2. On the floor of the main deck is a crate (object with brick pattern) with a mass of 75.0 kg (Fig.). (a) How many forces are acting on the crate: (1) zero; (2) one; (3) two; (4) three (b) Determine the normal force on the crate and compare it to the normal force the crate would experience if it were at rest on the surface of the Earth.

FIGURE Away we go See Exercise.