A 3kg takes off from rest. Its propeller (rotor)exerts a vertical thrust of 150N. a. What is the drone's vertical acceleration? b. Height it travels in 4s?
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- 1. You are tasked with designing the runway on an aircraft carrier. The minimum speed for the F/A18 Hornet is 200 mph. The Hornet weighs 40,000 lbf and its twin engines provide a thrust of ~40,000 lbf combined, providing a max acceleration of 1g.a. How long must the deck be to takeoff unassisted? Give the answer in ft. b. This is most likely longer than your typical ~450 ft carrier. What acceleration must you achieve with both the engines and with a catapult system together to reach the required minimum speed by the end of the deck? c. What net force (combined engines and catapult) must be applied to the plane to get the acceleration in b? d. Do you think the plane will be able to use disk brakes on its tires to stop when landing?Use your knowledge of friction to make your argument. Also know that their coefficient of friction is ~1.7. Figure A shows a weight-and-rope system held in equilibrium be means of two fixed and frictionless pulleys. If Wi id 50 N, find the values of W2 and W3. Figure A. 30° 60° W3 W, W.corre hacia acả v constante rueda hacia ac An acrobat who is on the lateral surface of a cylinder, moves his legs and moves the cylinder with constant velocity. The cylinder is on a rough horizontal surface (with friction). If the coefficient of friction between the shoes and the cylinder is mu = 0.21 determine the force of friction %3D between the cylinder and the acrobat A. 128.6 N B. 100 N C. 12.8 N D. 200 N E. 342 N F. ON G. 9.8 N H. None of the above 1. 21 N J. 132 N
- A girl of mass 40 kg skis down a slope. The incline is at an angle of 30° with the horizontal. If the coefficient of kinetic friction between her skis and the snow is 0.2, what is the girl's acceleration? 30° O A. 5 m/s? O B. None O C. 6.52 m/s² O D. 10 m/s2 O E. 3.268 m/s?10. How much horizontal force is needed to produce an acceleration of 8 m/sec² on a 75 kg box? A. 600 N B. 500 N C. 400 N D. 200 N 11. g=32.2 ft/sec². How is it expressed in SI? A. 9.81 m/sec² B. 9.86 m/sec² 12. What path does a projectile follow? A. ellipse B. parabola C. 9.08 m/sec² C. part of a circle D. 9.91 m/sec² D. hyperbolaA projectile of mass 0.75 kg is shot straight up into the air with an initial speed of 20 m/s. a. How high would it go if there were no air resistance? b. If the projectile rises to a maximum height of 12 m, determine the magnitude of the average force due to air resistance.
- The cables, knotted at B support the 60kg mass. Sketch a complete free body diagram knot at B. Determine the tension in Cable AB. a. 75.0N b. 981Nc. 736N d. 100N Determine the tension in Cable BC. a. 60.0N b. 589Nc. 45.0N d. 441NCables are knotted at O. Determine the tension in Cable OC. C(-3,-4,12) ft z а 19101b c 6.06 lb b 6280 lb d 195 lb Determine the tension in Cable OA. а 1930 Ib b 45.0 lb c 60.0 lb d 489 lb В Determine the tension in Cable OB. а 45.01b b 60.0 lb 180 lb c 1450 lb d 589 lb..You get in an elevator, and step onto a weighing scale. You also recall that your normal weight is 625N. A. If the elevator has an acceleration of magnitude 2.50m/s?, what does the scale read as you go UP inside the elevator? b. What does the scale read if as you go DOWN with an acceleration of 3.33m/s??
- 3. A 2kg owl jumps directly upward into the air with a speed of 5m/s, but a wind is blowing which exerts a 6N force on the ball to the right. How far away does the owl land? Ax Vi Vf a At X Y 6N 5m/s ?A 5.0 kg dog sits on the floor of an elevator that is accelerating downward at 1.20 m/s2.a. What is the magnitude of the normal force of the elevator floor on the dog?A. 34 N B. 43 N C. 49 N D. 55 N E. 74 Nb. What is the magnitude of the force of the dog on the elevator floor?A. 4.2 N B. 49 N C. 55 N D. 43 N E. 74 NKTMDG A box slides from rest down a curved slope. Its initial height is 21 m above the ground, and it comes off the slope 7_m above the ground. How fast is the box moving as it leaves the slope? Assume friction is negligible. A 22. D. 28.11 m/s 15.06 m/s 15.74 m/s 21.52 m/s E. F. 13.37_m/s 16.57 m/s MacBook Pro ن د نے A. B. C. 1--1 Pigshow.jpeg DPig show.jpeg