University:
Concordia University Wisconsin
Course:
PHYS 1514 | General Physics I
Academic year:

2019
Views:

44

Pages:

14
Author:

Hallie Randolph

Circular Motion and Universal Gravitation Review Package 1. A small toy airplane suspended as shown below flies in a circular path. Key Which of the following free body diagrams best describes the forces acting on the airplane at the position shown? F_{c} = (14pi ^ 2 * R)/(T ^ 2) = (n) * (pi ^ 2 * (4omega) ^ 2)/((35) ^ 2) B. T C. this is the total 1, T F A1.5 kg objectis in uniform circular motion with a period of 3.0s. If the radius of the path 4.0 m, what the centripetal force on object? = 26N 3. An empty 12 kg swing-type ride at the fairgrounds has a kinetic energy of 480 J. What is the centripetal force on the empty seat? 4. A 75 kg person rides a Ferris wheel which is rotating uniformly. The centripetal force on the person is 45 Ν. Top Fe - k_{y} 690 690N F_{c} = T + f_{g} T = E - Fg = 45rj - 7s(9s) = - 690N Bottom F ex =F c F_{c} = T - G T = F_{c} + F_{g} = 45N + 75(9.8) = (780N)/(7.8 * 10 ^ 2 * N) What force does the seat exert on the rider at the top and at the bottom of the T = F_{W} = 690N = 6 * 10 ^ 2 - 11 5. Which required to move an object in a gravitational field? A. F B. F dF = Fd F = (GMm)/(R ^ 2) F propto 1/(R ^ 2) E < 1/R * C d DF d F propto 1/R k d d 6. A 1 500 kg satellite orbits the earth at 2 500 m/s. What is the satellite's centripetal acceleration? nood r A 0.098m / (s ^ 2) B. 0.98m / (s ^ 2) C. 9.8m / (s ^ 2) D. 1.5 * 10 ^ 2 * m / (s ^ 7)

Circular Motion and Universal Gravitation Review Package

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