Chapter 5 circular motion and gravity
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Chapter 5: Circular Motion and Gravity. A ball is whirled in a horizontal circle of radius r and speed v. The radius is increased to 2r keeping the speed of the ball constant. The period of the ball changes by a factor of. one half. one. two. three. four..

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Chapter 5: Circular Motion and Gravity

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Chapter 5 circular motion and gravity

Chapter 5: Circular Motion and Gravity


Chapter 5 circular motion and gravity

A ball is whirled in a horizontal circle of radius r and speed v. The radius is increased to 2r keeping the speed of the ball constant. The period of the ball changes by a factor of

  • one half.

  • one.

  • two.

  • three.

  • four.


Chapter 5 circular motion and gravity

A ball is whirled in a horizontal circle of radius r and speed v. The radius is increased to 2r keeping the speed of the ball constant. The period of the ball changes by a factor of

  • one half.

  • one.

  • two.

  • three.

  • four.


Chapter 5 circular motion and gravity

The figure shows the position of a ball as it is being whirled in a vertical circle. At point (a), the direction of the centripetal acceleration is


Chapter 5 circular motion and gravity

The figure shows the position of a ball as it is being whirled in a vertical circle. At point (a), the direction of the centripetal acceleration is


Chapter 5 circular motion and gravity

Suppose a planet exists that has half the mass of earth and half its radius. On the surface of that planet, the acceleration due to gravity is

  • twice that on Earth.

  • the same as that on Earth.

  • half that on Earth.

  • one-fourth that on Earth.

  • none of these.


Chapter 5 circular motion and gravity

Suppose a planet exists that has half the mass of earth and half its radius. On the surface of that planet, the acceleration due to gravity is

  • twice that on Earth.

  • the same as that on Earth.

  • half that on Earth.

  • one-fourth that on Earth.

  • none of these.


Chapter 5 circular motion and gravity

The radius R of a stable, circular orbit for a satellite of mass m and velocity v about a planet of mass M is given by

  • R = Gv/M

  • R = Gv/mM

  • R = GmM/v

  • R = GM/mv

  • R = GM/v2


Chapter 5 circular motion and gravity

The radius R of a stable, circular orbit for a satellite of mass m and velocity v about a planet of mass M is given by

  • R = Gv/M

  • R = Gv/mM

  • R = GmM/v

  • R = GM/mv

  • R = GM/v2


As a satellite falls into a lower orbit its speed

As a satellite falls into a lower orbit, its speed

  • decreases.

  • is unchanged.

  • increases.

  • depends on the mass of the satellites.

  • cannot be determined.


As a satellite falls into a lower orbit its speed1

As a satellite falls into a lower orbit, its speed

  • decreases.

  • is unchanged.

  • increases.

  • depends on the mass of the satellites.

  • cannot be determined.


Which of the following statements is one of kepler s three laws of planetary motion

Which of the following statements is one of Kepler's three laws of planetary motion?

  • A line joining any planet to the sun sweeps out equal areas in equal times.

  • Only an odd number of planets can orbit the sun.

  • The period of any planet about the sun is proportional to the planet's distance from the sun.

  • All planets move in elliptical orbits with the earth at one focus.

  • F = GMm/R2


Which of the following statements is one of kepler s three laws of planetary motion1

Which of the following statements is one of Kepler's three laws of planetary motion?

  • A line joining any planet to the sun sweeps out equal areas in equal times.

  • Only an odd number of planets can orbit the sun.

  • The period of any planet about the sun is proportional to the planet's distance from the sun.

  • All planets move in elliptical orbits with the earth at one focus.

  • F = GMm/R2


Of the satellites shown revolving around earth the one with the greatest speed is

Of the satellites shown revolving around Earth, the one with the greatest speed is

  • 1

  • 2

  • 3

  • 4

  • 5


Of the satellites shown revolving around earth the one with the greatest speed is1

Of the satellites shown revolving around Earth, the one with the greatest speed is

  • 1

  • 2

  • 3

  • 4

  • 5


Chapter 5 circular motion and gravity

Five masses are in orbit around a central mass. A is a distance R from the center, B is at 2R, C is at 3R, D at 4R and E is at 5R. Which planet has the longest period of revolution?


Chapter 5 circular motion and gravity

Five masses are in orbit around a central mass. A is a distance R from the center, B is at 2R, C is at 3R, D at 4R and E is at 5R. Which planet has the longest period of revolution?


Chapter 5 circular motion and gravity

A planet is orbiting a star in an elliptical orbit as shown. The speed of the planet when it is at A is _____ the speed when it is at B.

  • less than

  • equal to

  • greater than


Chapter 5 circular motion and gravity

A planet is orbiting a star in an elliptical orbit as shown. The speed of the planet when it is at A is _____ the speed when it is at B.

  • less than

  • equal to

  • greater than


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