An elevator of mass is moving upward at constant velocity through the air

PHYSICS · Subjective · A Level · Physics · Mechanics and materials · Mechanics and materials

Problem

An elevator of mass

900\,\text{kg}

is moving upward at constant velocity through the air. External forces on the elevator are its weight

\vec W

, an upward tension

\vec T

from the cable, and a downward air-resistance force

\vec R

of magnitude

1.8\times10^{3}\,\text{N}

. Write the quantitative relationship these forces must satisfy for translational equilibrium and determine the numerical value of the tension

T