27. Less force is required to launch a spaceship from the surface of the Moon than to launch an identical ship from the surface of Earth becauseA. the Moon has a smaller surface area than Earth.B. the mass of an object on Earth is greater than on the Moon.C. the gravitational field of the Moon is less than that of Earth.D. the atmosphere of the Moon is much thinner than that of Earth. unit 4 test circular motion.pdfOpen with -POF26. As a satellite falls toward Earth, the gravitational force between the satellite and Earth increases. Whichstatement best explains why there is an increase in gravitational force?AAs the satellite gets closer to Earth, the satellite cools.В.As the satellite approaches Earth, the satellite rotates faster.С.The mass of the satellite increases as it nears Earth.D.The distance between Earth and the satellite decreases.27. Less force is required to launch a spaceship from the surface of the Moon than to launch an identical shipfrom the surface of Earth becauseAthe Moon has a smaller surface area than Earth.В.the mass of an object on Earth is greater than on the Moon.С.the gravitational field of the Moon is less than that of Earth.D.the atmosphere of the Moon is much thinner than that of Earth.28. The force of gravity would be greatest between which of the following?ObjectMassPencil15 gBrick60 kg+Page 10 I 19

Required : Why less force is required to launch a space vehicle from the Moon.

Less force is required to launch a spaceship from the surface of the Moon than to launch an identical ship from the surface of Earth because A. the Moon has a smaller surface area than Earth. B. the mass of an object on Earth is greater than on the Moon. C. the gravitational field of the Moon is less than that of Earth. D. the atmosphere of the Moon is much thinner than that of Earth.

Less force is required to launch a spaceship from the surface of the Moon than to launch an identical ship from the surface of Earth because A. the Moon has a smaller surface area than Earth. B. the mass of an object on Earth is greater than on the Moon. C. the gravitational field of the Moon is less than that of Earth. D. the atmosphere of the Moon is much thinner than that of Earth.

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter6: Uniform Circular Motion And Gravitation

Section: Chapter Questions

Problem 48PE: Integrated Concepts Space debris left from old satellites and their launchers is becoming a hazard...

See similar textbooks

Similar questions

Integrated Concepts Space debris left from old satellites and their launchers is becoming a hazard to other satellites. (a) Calculate the speed of a satellite in an orbit 900 km above Earth's surface. (b) Suppose a loose rivet is in an orbit of the same radius that intersects the satellite's orbit at an angle of 90° relative to Earth. What is the velocity of the rivet relative to the satellite just before striking it? (c) Given the rivet is 3.00 mm in size, how long will its collision with the satellite last? (d) If its mass is 0.500 g, what is the average force it exerts on the satellite? (e) How much energy in joules is generated by the collision? (The satellite's velocity does not change appreciably, because its mass is much greater than the rivet's.)
Additional Problems A synchronous satellite. which always remains above the same point on a planet's equator, is put in circular orbit around Jupiter to study that planet's famous red spot. Jupiter rotates once every 9.84 h. Use the data of Table 7.3 to find the altitude of the satellite.
Unreasonable Results (a) Based on Kepler's laws and information on the orbital characteristics of the Moon, calculate the orbital radius for an Earth satellite having a period of 1.00 h. (b) What is unreasonable about this result? (c) What is unreasonable or inconsistent about the premise of a 1.00 h orbit?
Construct Your Own Problem On February 14, 2000, the NEAR spacecraft was successfully inserted into orbit around Eros, becoming the first artificial satellite of an asteroid. Construct a problem in which you determine the orbital speed for a satellite near Eros. You will need to find the mass of the asteroid and consider such things as a safe distance for the orbit. Although Eros is not spherical, calculate the acceleration due to gravity on its surface at a point an average distance from its center of mass. Your instructor may also wish to have you calculate the escape velocity from this point on Eros.
Astronomical observatrions of our Milky Way galaxy indicate that it has a mass of about 8.01011 solar masses. A star orbiting on the galaxy’s periphery is about 6.0104 light-years from its center. (a) What should the orbital period of that star be? (b) If its period is 6.0107 years instead, what is the mass of the galaxy? Such calculations are used to imply the existence of other matter, such as a very massive black hole at the center of the Milky Way.
The Moon and Earth rotate about their common center of mass, which is located about 4700 km from the center of Earth. (This is 1690 km below the sufrace.) (a) Calculate the acceleration due to the Moon’s gravity at that point. (b) Calculate the centripetal accelereation of he center of Earth a sit rotates about that point once each lunar month (bout 27.3 d) and compare it with the acceleration found in part (a). Comment on whether or not they are equal and why they should or should not be.
Unreasonable Result A mountain 10.0 km from a person exerts a gravitational force on him equal to 2.00% of his weight. (a) Calculate the mass of the mountain. (b) Compare the mountain's mass with that of Earth. (c) What is unreasonable about these results? (d) Which premises are unreasonable or inconsistent? (Note that accurate gravitational measurements can easily detect the effect of nearby mountains and variations in local geology.)
A 15.0-kg object is in free fall near the surface of the Earth. What is its weight? What is its acceleration? What is the direction of the gravitational force exerted on it? How do your answers change if the same object is at rest on the surface of the Earth?
A car moves at speed v across a bridge made in the shape of a circular arc of radius r. (a) Find an expression for the normal force acting on the car when it is at the top of the arc. (b) At what minimum speed will the normal force become zero (causing the occupants of the car to seem weightless) if r = 30.0 m?
FIGURE 8.38 Comparison of a circular and an elliptical orbit. The semimajor axis of the ellipse is the radius of the circular orbit. At points I and J on the ellipse, the particles speed is the same as it would be on the circle. At perihelion P, the particles speed is too high to maintain a circular orbit, and at aphelion A, it is too low. G Case Study Comet Hale-Bopps elliptical orbit is described in Problem 63. Draw an energy graph for the Suncomet system. For points A, P, I, and J (Fig. 8.38, page 236), superimpose a bar chart on the energy graph.
Two friends are having a conversation. Anna says a satellite in orbit in freefall because the satellite keeps falling toward Earth. Tom says a satellite in orbit is not in freefall because the acceleration due to gravity is not 9.80 m/s2. Who do you agree with and why?
Additional Problems A synchronous satellite. which always remains above the same point on a planet's equator, is put in circular orbit around Jupiter to study that planet's famous red spot. Jupiter rotates once every 9.84 h. Use the data of Table 7.3 to find the altitude of the satellite.