An elevator weighing 10,000. N is supported by a steel cable. Determine the tension in the cable when the elevator is accelerated upward at 3.0 m/s2. (g = 9.8 m/s2)
A) 40. kN
B) 10. kN
C) 7.0 kN
D) 13. kN
E) 11. kN
D
You might also like to view...
A proton's rest mass is 1.67 × 10^?27 kg. Calculate its total energy when it is accelerated to a speed of 0.80c
a. 1.5 × 10^?10 J b. 1.0 × 10^?10 J c. 2.5 × 10^?10 J d. 2.0 × 10^?10 J e. 7.5 × 10^?10 J
A conducting rod (length = 80 cm) rotates at a constant angular rate of 15 revolutions per second about a pivot at one end. A uniform field (B = 60 mT) is directed perpendicularly to the plane of rotation. What is the magnitude of the emf induced between the ends of the rod?
a. 2.7 V b. 2.1 V c. 2.4 V d. 1.8 V e. 3.3 V
Ice cubes submerged at the bottom of a liquid indicate that the liquid
A) produces insufficient buoyant force on the ice. B) is warmer than the ice. C) is only partly displaced by the submerged ice. D) is less dense than ice.
The star's color index is a quick way of determining its:
A) density. B) luminosity. C) mass. D) temperature. E) composition.