Name: The Green Goblin has sabotaged an elevator with Mary Jane Watson inside, a

Question

Name: The Green Goblin has sabotaged an elevator with Mary Jane Watson inside, and Spiderman springs into action to save her. Spiderman grasps the cable to stop the elevator from crashing to the ground Spiderman pulls on the cable, stops the elevator, then continues pulling on the cable so that the elevator is moving upward at a steadily increasing speed 1 A. 13 points] What is the direction of the net force on the elevator? If there is no net force, state this explicitly Explain your reasoning B. 3 points] Is the normal force exerted on Mary Jane by the elevator greater than, less than, or egual to the gravitational force exerted on Mary Jane by the Earth? Explain how you know. C. 16 points Draw two free-body diagrams one for the elevator and one for Mary Jane. Be sure your free- body diagrams are to the same scale, and that you label which one is for Mary Jane and which one is for the elevator FBD For: FBD For D. 12 points] Identify any Newton's 3 d Law force pair(s) on the free body diagrams you just drew by marking each force with an "x." Possible Points: 14 Earned Points: Page 1

Explanation / Answer

elevator is moving with increasing speed, net force is upwards

as mary jane is moving upwards the net force is greater than gravity

mary jane has two forces, gravity doenwards and normal reaction upeards

e;levator has spidermans pulling upwards, gravity downwards, and normal reaction downwards

2. a

mv^2/r to left and g downwards

Related Questions

Navigate

• Browse (All)
• Browse N
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.