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Q. A 7.00-kg box is sliding across the horizontal floor of an elevator. The coefficient of kinetic friction between the box and the floor is 0.490. Determine the kinetic frictional force that acts on the box for each of the following cases.

The elevator is stationary.

Q. A space station in the form of a large wheel, 246 m in diameter, rotates to provide an "artificial gravity" of 2.8 m/s2 for people located on the outer rim. Find the rotational frequency of the wheel that will produce this effect. Answer in units of rpm

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Category:- Physics
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