You have taken a vacation to the moon. You find you feel much lighter than you normally do on Earth. Why is this? You are moving with a lower velocity than you thought. The graivitational pull of the moon is the same as Earth's gravitational pull. The graivitational pull of the moon is less than Earth's gravitational pull. The graivitational pull of the moon is more than Earth's gravitational pull. You have a higher net force acting on you. Submit Answer Tries 0/5

You have taken a vacation to the moon. You find you feel much lighter than you normally do on Earth. Why is this? You are moving with a lower velocity than you thought. The graivitational pull of the moon is the same as Earth's gravitational pull. The graivitational pull of the moon is less than Earth's gravitational pull. The graivitational pull of the moon is more than Earth's gravitational pull. You have a higher net force acting on you. Submit Answer Tries 0/5

Principles of Physics: A Calculus-Based Text

5th Edition

ISBN:9781133104261

Author:Raymond A. Serway, John W. Jewett

Publisher:Raymond A. Serway, John W. Jewett

Chapter11: Gravity, Planetary Orbits, And The Hydrogen Atom

Section: Chapter Questions

Problem 6OQ: Suppose the gravitational acceleration at the surface of a certain moon A of Jupiter is 2 m/s2. Moon...

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Suppose the gravitational acceleration at the surface of a certain moon A of Jupiter is 2 m/s2. Moon B has twice the mass and twice the radius of moon A. What is the gravitational acceleration at its surface? Neglect the gravitational acceleration due to Jupiter, (a) 8 m/s2 (b) 4 m/s2 (c) 2 m/s2 (d) 1 m/s2 (e) 0.5 m/s2
The mass of the Earth is approximately 5.98 1024 kg, and the mass of the Moon is approximately 7.35 1022 kg. The Moon and the Earth are separated by about 3.84 108 m. a. What is the magnitude of the gravitational force that the Moon exerts on the Earth? b. If Serena is on the Moon and her mass is 25 kg, what is the magnitude of the gravitational force on Serena due to the Moon? The radius of the Moon is approximately 1.74 106 m.
Planetary orbits are often approximated as uniform circular motion. Figure P7.9 is a scaled representation of a planets orbit with a semimajor axis of 1.524 AU. a. Use Figure P7.9 to find the ratio of the Suns maximum gravitational field to its minimum gravitational field on the planets orbit. b. What is the ratio of the planets maximum speed to its minimum speed? c. Comment on the validity of approximating this orbit as uniform circular motion.
(a) Find the magnitude of the gravity force between a planet with mass 5.98 1024 kg and its moon, with mass 7.36 1022 kg, if the average distance between them is 3.84 108 m. (b) What is the acceleration of the moon toward the planet? (c) What is the acceleration of the planet toward the moon? (See Section 7.5.)
You are on a strange new planet and you measure a weight of 2.1 Newtons acting on a 3 kg block. What is the gravitational acceleration of the planet? You are on a strange new planet and you measure a weight of 2.0 Newtons acting on a 9.5 kg block. What is the gravitational acceleration of the planet?
The figure below is for a 6 kg box on a horizontal floor. Initially, you are pushing horizontally on the box and friction is opposing you. Then, you stop pushing the box. Use g = 10 m/s?. v(m/s) 8.0 6.0 4.0 2.0 1.0 2.0 3.0 t(s) Find the gravitational force acting on the box.
Miniature black holes. Left over from the big-bang beginning of the universe, tiny black holes might still wander through the universe. If one with a mass of 2 × 1011 kg (and a radius of only 4 × 10-16 m) reached Earth, at what distance from your head would its gravitational pull on you match that of Earth's? Assume free-fall acceleration ag=9.83 m/s2.
Concern the planet Mars, which has a radius of 3400 km. On Mars, the acceleration due to gravity is 3.72 m/s^2 The mass of the sun is 2.0×1030 kg, while the (actual) mass of Mars is 6.4×1023 kg. The average distance from Mars to the sun is 228 million kilometers. a. What is the gravitational force acting on Mars due to the sun? What is the reaction force to this force? Name or explain the force; don’t give a value. b. What are the speed and angular velocity of Mars? Compare the values to those of Earth. c. Using only information provided above, estimate the length of a year on Mars. Compare the value to that of Earth.
The figure below is for a 7 kg box on a horizontal floor. Initially, you are pushing horizontally on the box and friction is opposing you. Then, you stop pushing the box. Use g = 10 m/s2. v(m/s) 6.0 4.5 3.0 1.5 0.3 0.6 0.9 t(s) Find the gravitational force acting on the box. Find the normal force acting on the box. Assume the frictional force is constant throughout the motion and find the frictional force. Assume the frictional force is constant throughout the motion and find your pushing force. Find the displacement of the box over the entire time shown.
a. What is the difference between the force in F = ma (Newton's 2nd law) and F= Gm₁m₂/d² (Newton's law of universal gravitation). b. Find the net force on a Planet A of mass 3.0 x 101⁹ kg due to the gravitational attraction of both Planet B of mass 4.9 x 102⁰ kg and the Sun of mass 2.1 x 103⁰ kg, assuming they are at right angles to each other. The distance of Planet A from Planet B is 5.0 x 107 m and distance of the Sun from the Planet A is 5.8 x 106 m. G= 6.67 x 10-1¹ N.m²/kg². |
The value of g at Earth’s surface is about 10 m/s2. What is the value of g at a distance of twice Earth’s radius?
You are an astronaut exploring an unknown planet, with a mass of 4.02×1024 kg, and a radius of 4,148 km. Draw a free body diagram of the forces acting as you stand on the surface. What is the magnitude of the acceleration due to gravity at the surface of the planet in m/s2? Calculate your answer to 2 sf.