Consider a ball swinging on a string. How does the tension relate to the gravitational force at the bottom of a swing? A. The tension is equal to the gravitational force B. The tension is greater than the gravitational force C. The tension is lesser than the gravitational force

Consider a ball swinging on a string. How does the tension relate to the gravitational force at the bottom of a swing? A. The tension is equal to the gravitational force B. The tension is greater than the gravitational force C. The tension is lesser than the gravitational force

Physics for Scientists and Engineers: Foundations and Connections

1st Edition

ISBN:9781133939146

Author:Katz, Debora M.

Publisher:Katz, Debora M.

Chapter7: Gravity

Section: Chapter Questions

Problem 35PQ

See similar textbooks

Similar questions

When a star dies, much of its mass may collapse into a single point known as a black hole. The gravitational force of a black hole on surrounding astronomical objects can be very great. Astronomers estimate the strength of this force by observing the orbits of such objects around a black hole. What is the gravitational force exerted by a black hole on a 1-solar-mass star whose orbit has a 1.4 1010 m radius and a period of 5.6 days?
(a) Suppose that your measured weight at the equator is one-half your measured weight at the pole on a planet whose mass and diameter are equal to those of Earth. What is the rotational period of the planet? (b) Would you need to take the shape of this planet into account?
Saturns ring system forms a relatively thin, circular disk in the equatorial plane of the planet. The inner radius of the ring system is approximately 92,000 km from the center of the planet, and the outer edge is about 137,000 km from the center of the planet. The mass of Saturn itself is 5.68 1026 kg. a. What is the period of a particle in the outer edge compared with the period of a particle in the inner edge? b. How long does it take a particle in the inner edge to move once around Saturn? c. While this inner-edge particle is completing one orbit abound Saturn, how far around Saturn does a particle on the outer edge move?
Figure P7.45 shows a picture of American astronaut Clay Anderson experiencing weightlessness on board the International Space Station. a. Most people have the misconception that a person in a spacecraft is weightless because he or she is no longer affected by gravity. Show that this premise cannot be true by computing the gravitational field of the Earth at an altitude of 200 km the typical altitude of a spacecraft in orbit. Compare this result with the gravitational field on the surface of the Earth. b. Why would astronauts in orbit experience weightlessness even if they are experiencing a gravitational field (and therefore a gravitational force)?
Io and Europa are two of Jupiters many moons. The mean distance of Europa from Jupiter is about twice as far as that for Io and Jupiter. By what factor is the period of Europas orbit longer than that of Ios?
Three billiard balls, the two-ball, the four-ball, and the eight-ball, are arranged on a pool table as shown in Figure P7.26. Given the coordinate system shown and that the mass of each ball is 0.150 kg, determine the gravitational field at x=2m, y=0.
A support system is mounted to a table. A spring is attached to the support system. A ball hangs from the end of the spring. A string is attached to the right side of the ball, a person pulls the string to the right. a. The ball is the system, what are the objects in the surroundings that interact with the system? I. Person II. Gravity III. Spring IV. Friction V. String VI. Ball VII. Table VIII. Earth IX. Normal Force X. Tension b. Sketch a force diagram for the system. Label all forces acting on the system.
Consider a ball swinging on a string. How does the tension relate to the gravitational force at the bottom of a swing? The tension is greater than the gravitational force. The tension is lesser than the gravitational force. The tension is equal to the gravitational force. Submit Request Answer
1.1 A thin uniform circular disk of radius a, mass m and A mass per unit length exerts gravitational force on a particle of mass M at distance b from the center of the ring, see figure below. Find the gravitational force that the disk exerts on the particle. AZ M Note! Disk is in the XY-plane and D is along the Z-axis b 1.2 Given that A = 5.0 kgm', a = 0.5 cm and d 150 cm. Determine the gravitational force that the disk exerts on a particle of mass M = 1000 g.
A conical pendulum is formed by attaching a ball of mass m to a string of length L, then allowing the ball to move in a horizontal circle of radius r. a. Draw a free-body diagram for the ball. b. Find an expression for the tension Tin the string in terms of m and 0. C. Find an expression for the ball's angular speed w in terms of r and 0. D. What are the tension and angular speed (in rpm) for a 500 g ball swinging in a 20-cm-radius circle at the end of a 1.0-m-long string? Point
Activity 2.11 - Circular Dynamics Problems 1. A carnival ride consists of a hollow cylinder spinning about a vertical axis. As the cylinder spins with a speed , a person of mass M rides the inside wall of the cylinder without slipping down (there is no floor). The distance of the center of mass of the person from the axis of the cylinder is R. a. Draw the free body diagram of forces acting on the person during the ride. Show your choice for the +x and +y directions. b. Write out Newton's 2nd law in the x and y directions. Set the RHS of the equations to zero or Mv²/R or-Mv²/R. C. x: y: What is the normal force? 0 8 d. What is the magnitude and direction of the friction force that the wall exerts on the rider? e. What is the magnitude and direction of the friction force the rider exerts on the wall? = f. The coefficient of static friction between the wall and the rider is. What is the minimum speed that the rider can move without slipping down the wall?
3. The gravitational field strength at some position far above the earth is 8.2 N/kg. a. What force will act on the following masses, at this position? 1. 2.0 kg II. III. 500.0 kg How far from the centre of the earth is this position? What is the altitude of this position? 4. An astronaut is on a rotating space station with a radius of 2.0 x 10² m. What speed of the astronaut and period of rotation will make the astronaut feel as if she is experiencing her normal earth weight?