Question

Review 8-62 (algorithmic) Question Help A robotic rover on Mars finds a spherical rock with a diameter of 11 centimeters [cm]. The rover picks up the rock and liftsit 20 centimeters (cm) straight up. The rock has a specific gravity of 5.25. The gravitational acceleration on Mars is 3.7 meters per second squared [m/s]. If the robot's lifting arm has an efficiency of 40% and required 8 seconds to raise the rock 20 centimeters fem, how much power in units of watts W] did the arm use? Click the icon to view the conversion table. Click the icon to view the density of water Click the icon to view the table of common derived units in the Sl system. Click the icon to view Si prefixes table. The robot's arm used W. (Round your answer to two decimal places.)

Answer 1

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Date.. 50 25x1000 kg S. G = 5.25 density of rock = a a = 3. 7 m/? & t= 20cm - 02 t = 8 sec m 13 1ool o mass of cock - 8 r = 5.25* 1000x (4a/11) - 29.27kg Force = Mg 3 29.27X 3. 7 = 108.299 N V = 1 = 0 2/0 - to lower require = For =108, 299 x t = 2070 W - t mis =,4 p Peuter used by Roller 4P = 2070 IP = 6.768 W