A 5-kg block is suspended by a rope from the ceiling of an elevator that accelerates downward at 3.0 m/s².The tension force of the rope on the block is: A)15 N, up B)34 N, up C)34 N, down D)64 N, up E)64 N, down

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Quizplus · Accepted Answer

The tension in the rope can be found using the formula $T = mg - ma$, where $m$ is the mass of the block, $g$ is the acceleration due to gravity (9.8 m/s$^2$), and $a$ is the acceleration of the elevator. Here, $T = 5 \times 9.8 - 5 \times 3 = 49 - 15 = 34$ N, and since tension always pulls away from the object, it is directed upwards.

A 5-Kg Block Is Suspended by a Rope from the Ceiling