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Chapter 5: Q20. (page 131)

People sometimes ask, "What keeps a satellite up in its orbit around the Earth?" How would you respond?

Short Answer

Expert verified

The satellite remains in the orbit due to its speed and centripetal force.

Step by step solution

01

Step 1. Understanding orbit radius and velocity

In this problem, for a perfectly circular orbit the relation between orbit radius and speed of the orbit will be used.

02

Step 2. Explaining the reason behind keeping a satellite up in its orbit

The satellite is moving in an orbit because of the centripetal force produced by the gravitational force. Also, the centripetal force helps to keep the satellite in its orbit. The speed of the satellite is evaluated by using the radius of the orbit and gravitational acceleration. This speed maintains the satellite to remain in its orbit.

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Most popular questions from this chapter

Determine the mass of the Earth from the known period and distance of the Moon.

(II) Planet A and planet B are in circular orbits around a distant star. Planet A is 7.0 times farther from the star than is planet B. What is the ratio of their speeds \({v_A}/{v_B}\)?

A car maintains a constant speed v as it traverses the hill and valley shown in Fig. 5鈥�34. Both the hill and valley have a radius of curvature R. At which point, A, B, or C, is the normal force acting on the car (a) the largest, (b) the smallest? Explain. (c) Where would the driver feel heaviest and (d) lightest? Explain. (e) How fast can the car go without losing contact with the road at A?

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FIGURE 5-35MisConceptual Question 3.

How many "accelerators" do you have in your car? There are at least three controls in the car which can be used to cause the car to accelerate. What are they? What accelerations do they produce?
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