Pathways to Astronomy

Stephen E. Schneider

Chapter 16 The Universal Law of Gravity - all with Video Answers

Educators

Chapter Questions

Problem 1

Suppose you were standing at the top of a very tall tower, $6370 \mathrm{km}$ tall. What would be the gravitational force of the Earth on you at the top of this tower compared to the force you feel standing on Earth's surface? (Hint: You do not have to do as much arithmetic if you work this out with proportions.)

Mayukh Banik

Numerade Educator

01:40

Problem 2

What would be the weight of an object that weighs 180 newtons on the Earth if it were moved to a planet with twice the mass of the Earth and a radius twice the radius of the Earth?

Aman Gupta

Numerade Educator

01:25

Problem 3

The Moon's radius is $1.74 \times 10^{6} \mathrm{m}$, while its mass is $7.35 \times 10^{22}$ kg. Find the surface gravity on the Moon from these values.

Adriano Chikande

Numerade Educator

02:38

Problem 4

The Sun's radius is $6.97 \times 10^{8} \mathrm{m}$, while its mass is $1.99 \times 10^{30} \mathrm{kg}$ Find the surface gravity on the Sun from these values. How much would you weigh if you could stand on the Sun's surface?

Shoukat Ali

Other Schools

01:17

Problem 5

The mass of the planet Jupiter is $1.90 \times 10^{27} \mathrm{kg}$, and the minimum distance from us to Jupiter is $6.30 \times 10^{11} \mathrm{m} .$ The mass of
a loaded 18 -wheeler is $35,000 \mathrm{kg}$
a. What is the gravitational force of Jupiter on you?
b. What is the force of the 18 -wheeler on you if you are standing 2 meters away from its center of mass?

Lucas Finney

Numerade Educator

01:23

Problem 6

Using the data in Appendix Table $5,$ find the surface gravity at the cloud-tops of Uranus.

Narayan Hari

Numerade Educator