Concept explainers
According to the Aristotle, if earth and water were displaced then they would return naturally to their proper place. Today, what do we call this Aristotelean natural motion?
The name of the Aristotelean natural motion.
Answer to Problem 1RQ
The name of the Aristotelean natural motion is force of gravity.
Explanation of Solution
According to Aristotle model of universe, earth is situated in the centre of the planetary system.
Since the Earth is situated in the centre of the planetary system, the substances in the earth fall towards the centre of the earth. These motions are known as natural motions.
When an external force is applied to an object, the object will start moving. Also the object will stop eventually, when the external force is zero. This motion is known as violent motion.
Similarly, Aristotle proposed that the earth and water displaced by natural motion; they will come to their place naturally.
This natural motion is also explained by Galileo and Newton for different situation. And they named this force as force of gravity. Thus, due to gravitational force, objects are falling towards the centre of earth. Therefore, the natural force can be regarded as the gravitational force in modern day terms.
Want to see more full solutions like this?
Chapter 5 Solutions
Foundations of Astronomy, Enhanced
- Your partner wants to test your Physics skills by playing a treasure hunt that will lead you to your anniversary gift from them. They left this sole clue that would lead you to the surprise: "Where there is ruin, there is hope for a treasure." - Rumi. I know you've been wanting to practice your Physics so I chose something that might help you. Use these clues to find your gift. Grab your phone and open your compass. Go to the park entrance and face the north direction. Then, walk straight ahead towards the first bench you see, about 70 meters from the entrance. Face east then turn as you count about 63 º degrees towards the north direction and you'll see a tree with a birdhouse near the bank of the river, just about 307 meters from the bench. Go there. As you turn to your left, walk along the side of the river until you reach the gazebo, about 805 meters. I'll be waiting for you there, like I have always and will always be. Curious about the length you covered while all…arrow_forwardSince 1995, hundreds of extrasolar planets have been discovered. There is the exciting possibility that there is life on one or more of these planets. To support life similar to that on the Earth, the planet must have liquid water. For an Earth-like planet orbiting a star like the Sun, this requirement means that the planet must be within a habitable zone of 0.9 AU to 1.4 AU from the star. The semimajor axis of an extrasolar planet is inferred from its period. What range in periods corresponds to the habitable zone for an Earth-like Planet orbiting a Sun-like star?arrow_forwardThe density of aluminum is 2.7 g/cm3g/cm3. What is the mass of a cube of aluminum that is 5.000 cmcm on a side? (Recall that density is mass divided by volume.)arrow_forward
- Do it correctly.arrow_forwardThe majority of the research shows that tectonic plates move at the average rate of between approximately 0.60 cm/yr to 10 cm/yr. (a) What distance does it move in 1 s at this speed range? (b) What is its speed in kilometers per million years?arrow_forwardYou have a dream you are driving across the country. In your dream, you leave Kala- mazoo at 9 a.m. on a tour along 194: you drive to Chicago, Milwaukee, Minneapolis, and Fargo. You arrive to Fargo at 8 p.m. You spent your entire trip staring out the window enjoying the sights, and (this is a dream, remember?) you didn't get hurt. According to the trip counter on your odometer, you have travelled 813 miles on your trip. The speed limit was between 55 mph and 70 mph on your trip. Were you ever speeding? Explain your reasoning.arrow_forward
- What concept was missing in peoples minds in the 16th century when they couldn’t believe Earth was moving?arrow_forwardThe mass of venus is 4.883x10^15 Tg and density of Venus is 5.256 g/cm^3. What is the radius of Venus? Express the answer in the SI unit that will give the smallest number that is greater than 1. Tera (or T) means 10^12arrow_forwardWhat is the density (in vehicles/km/lane) if I have a 2 lane road, with a total of 60 vehicles, and the road length is 500m (1/2 km)? 60 vehicles/km/lane 120 vehicles/km/lane 90 vehicles/km/lane 30 vehicles/km/lanearrow_forward
- Your partner wants to test your Physics skills by playing a treasure hunt that will lead you to your anniversary gift from them. They left this sole clue that would lead you to the surprise: "Where there is ruin, there is hope for a treasure." - Rumi. I know you've been wanting to practice your Physics so I chose something that might help you. Use these clues to find your gift. Hint: Grab your phone and open your compass. Go to the park entrance and face the north direction. Then, walk straight ahead towards the first bench you see, about 76 meters from the Face east then turn as you count about 15° degrees towards the north direction and you'll see a tree with a birdhouse near the bank of the river, just about 340 meters from the bench. Go there. As you turn to your left, walk along the side of the river until you reach the gazebo, about 843 meters. N ^ entrance. Curious about the length you covered while all dressed nicely and formal versus the shorter length is should have been if…arrow_forwardOn the evening of an autumnal equinox day Siddhant noticed that Mars was exactly along the north-south meridian in his sky at the exact moment when the sun was setting. In other words, the Sun and Mars subtended an angle of exactly 90° as measured from the Earth. If the orbital radius of Mars is 1.52 au, What will be the approximate rise time of the mars on the next autumnal equinox day?arrow_forward(a) Calculate Venus' mass given the acceleration due to gravity at the north pole is 8.865 m/s? and the radius of Venus at the pole is 6,052 km. M. calculated | kg (b) Compare this with the accepted value of 4.868 x 1024 kg. calculated M аcсeptedarrow_forward
- Foundations of Astronomy (MindTap Course List)PhysicsISBN:9781337399920Author:Michael A. Seeds, Dana BackmanPublisher:Cengage LearningStars and Galaxies (MindTap Course List)PhysicsISBN:9781337399944Author:Michael A. SeedsPublisher:Cengage Learning
- University Physics Volume 1PhysicsISBN:9781938168277Author:William Moebs, Samuel J. Ling, Jeff SannyPublisher:OpenStax - Rice UniversityAn Introduction to Physical SciencePhysicsISBN:9781305079137Author:James Shipman, Jerry D. Wilson, Charles A. Higgins, Omar TorresPublisher:Cengage Learning