Inquiry into Physics
8th Edition
ISBN: 9781337515863
Author: Ostdiek
Publisher: Cengage
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Chapter 2, Problem 9C
To determine
The mass of the Earth.
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An astronaut is standing on the moon. If the gravitational force exerted by the Moon on the astronaut is 169N, then what is the mass of the astronaut? (mMoon = 7.35 x 10^22 kg, rMoon = 1.73 x 10^6m)
You may attempt this question 3 more times for credit.
In this problem, we will directly calculate the surface gravity and your weight on another planet. In metric, your weight is measured in "Newtons", and 1
Newton = 1 kg m / s². Newton's constant G = 6.67 x 10-11 m³/(kg s²).
Earth has a mass = 5.97 x 1024 kg and a radius of 6378 km. You should be able to verify that g = 9.8 m/s² on Earth using the formula for surface gravity.
If your mass is 64 kg, you should also be able to verify you should weigh 626 Newtons. If you can do that you should be OK for what's next.
The mass of Venus is 4.87E+24 kg, and it's radius is 6.05E+3 km.
What is the surface gravity of this planet? (Watch your units!).
m/s²
If your mass is 64 kg, what would you weigh on Venus?
Newtons.
Note: Remember if your answer requires scientific notation to use the "e" notation: "1.1 x 105" is "1.1e5" to OWL.
the weight, w, of an object varies inversely as the square of the distance, d, between the object and the center of Earth. If a man weighs 75kg on the surface of Earth, how much would he weigh 300km above the Earth's surface? (given the radius of the earth is approximately 6400km)
Chapter 2 Solutions
Inquiry into Physics
Ch. 2 - Give three important “laws” that characterize...Ch. 2 - Describe the adhesion model of friction.Ch. 2 - Prob. 1MACh. 2 - Name a key invention that Newton contributed to...Ch. 2 - What important mathematical “tool” did Newton...Ch. 2 - Reread Section 2.7 on the law of universal...Ch. 2 - In this chapter, you've encountered a large number...Ch. 2 - (Indicates a review question. which means it...Ch. 2 - Prob. 2QCh. 2 - (Indicates a review question, which means it...
Ch. 2 - (Indicates a review question. which means it...Ch. 2 - Prob. 5QCh. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - Prob. 14QCh. 2 - Prob. 15QCh. 2 - Prob. 16QCh. 2 - (Indicates a review question. which means it...Ch. 2 - Prob. 18QCh. 2 - Prob. 19QCh. 2 - Prob. 20QCh. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - Prob. 25QCh. 2 - Prob. 26QCh. 2 - Prob. 27QCh. 2 - (Indicates a review question, which means it...Ch. 2 - Prob. 29QCh. 2 - (Indicates a review question. which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - (Indicates a review question, which means it...Ch. 2 - Express your weight in newtons. From this...Ch. 2 - A child weighs 300 N. What is the child’s mass in...Ch. 2 - Suppose au airline allows a maximum of 30 kg for...Ch. 2 - The mass of a certain elephant is 1,130 kg. (a)...Ch. 2 - The mass of a subway car and passenger is 40,000...Ch. 2 - A motorcycle and rider have a total mass equal to...Ch. 2 - As a 2-kg ball rolls down a ramp, the net force on...Ch. 2 - In an experiment performed in a space station, a...Ch. 2 - The engines in a supertanker carrying crude oil...Ch. 2 - . The Kingda Ka roller coaster in New Jersey is...Ch. 2 - . A person stands on a scale inside an elevator at...Ch. 2 - . A jet aircraft with a mass of 4,500 kg has an...Ch. 2 - . At the end of Section 1.4, we mentioned that the...Ch. 2 - . A sprinter with a mass of 80 kg accelerates...Ch. 2 - . As a baseball is being caught, its speed goes...Ch. 2 - . On aircraft carriers, catapults are used to...Ch. 2 - . At the end of an amusement park ride, it is...Ch. 2 - . An airplane is built to withstand a maximum...Ch. 2 - . Under certain conditions, the human body can...Ch. 2 - . A race car rounds a curve at 60 m/s. The radius...Ch. 2 - . A hang glider and its pilot have a total mass...Ch. 2 - . A 0.1-kg ball is attached to a string and...Ch. 2 - On a highway curve with radius 50 m, the maximum...Ch. 2 - . A centripetal force of 200 N acts on a 1,000-kg...Ch. 2 - . As a spacecraft approaches a planet, the rocket...Ch. 2 - . A space probe is launched from Earth headed for...Ch. 2 - . A hand exerciser utilizes a coiled spring. A...Ch. 2 - . A mass of 0.75 kg is attached to a relaxed...Ch. 2 - The force on a baseball as with a bat can be more...Ch. 2 - Two forces, one equal to 15 N and another equal to...Ch. 2 - Why does banking a curve on a highway allow a...Ch. 2 - As a horse and wagon are accelerating From rest,...Ch. 2 - Prob. 5CCh. 2 - Perhaps you’ve noticed that the rockets used to...Ch. 2 - Prob. 7CCh. 2 - Prob. 8CCh. 2 - Prob. 9CCh. 2 - Prob. 10C
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- The planet Jupiter has a mass of 1.9 × 1027 kg and a radius of 72,000 km. The Earth, meanwhile, has a mass of 6.0 × 1024 kg and a radius of 6,400 km. What is the volume of Earth in m^3?arrow_forward1arrow_forwardThe mass of earth is 6 x 1024 kg and that of the moon is 7.4 x 10 kg. If the distance between earth and moon is 3.84 x 105 km. Calculate the force exerted by the earth on the moon. (G = 6.7 × 10-1" N m² kg*).arrow_forward
- No. 2arrow_forwardA planet of mass 5.8 x 1024 kg orbits a star of mass 1.6 x 1030 kg in a circular orbit 10 x 1011 m from its center. Calculate the period of the orbit, in Earth years. Use G = 6.7 x 10-11 N m2/ kg2 and that one Earth year is 3.15 x 107 s. (Please answer to the fourth decimal place - i.e 14.3225)arrow_forwardA new planet is discovered orbiting a distant star. Observations have confirmed that the planet has a circular orbit with a radius of 12 AU and takes 117 days to orbit the star. Determine the mass of the star. State your answer with appropriate mks units. [NOTE: AU ..stands.for...astronomical unit". It is the average distance between Earth & the Sun. 1 AU≈ 1.496 x 1011 m.] Enter a number with units. I be quite large and your calculator will display the answer as a power of 10. If, as an example, your answer was 8.54 x 1056, you would type "8.54e56" into the answer box (remember to state your units with your answer).]arrow_forward
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- The hand written solution is not allowed please. No answer from Chat GPT.arrow_forwardMars' period (its "year") was noted by Kepler to be about 687 days (Earth days), which is (687d / 365 d) = 1.88 yr. Determine the distance of Mars from the Sun using the Earth as reference. (The distance of Earth from the Sun is 1.50 x 10 m) !3! Thu TMS IMS TE TES TES TE 2 28 x 10 m TES yr After reading and understanding the concept Gravity, please do the following problems: 1. What keeps a satellite up in its orbit around the Earth?arrow_forwardChapter 5, Section 5.8, Question 32 Determine the length of a rectangular trench you can dig with the energy gained from eating one Milky Way bar (270 cal). Assume that you convert the energy gained from the food with 5% efficiency and that the trench is 7 meters wide and 1 meter deep. Use the fact that the density of soil is 1000 kg/m³ and the acceleration due to gravity is 9.81 m/s². Round your answer to two decimal places. The length of the trench is the tolerance is +/- 2% Click if you would like to Show Work for this question: Open Show Work LINK TO TEXT meters.arrow_forward
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