The Physics of Everyday Phenomena
8th Edition
ISBN: 9780073513904
Author: W. Thomas Griffith, Juliet Brosing Professor
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Videos
Textbook Question
Chapter 4, Problem 31CQ
If the elevator cable breaks and you find yourself in a condition of apparent weightlessness as the elevator falls, is the gravitational force acting upon you equal to zero? Explain. (See everyday phenomenon box 4.2.)
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
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?
You are standing on a bathroom scale in an elevator (yes people are staring at you). You weigh 50 kg but the scale reads in Newtons.
Weight (force of Gravity) = Mass x Gravity (10m/s2)
As the elevator comes up on the ground floor it decelerates at 2 m/s2 downward.
What is the Gravitational Force?
Since the elevator is decelerating downward does the Normal Force have to be greater than, equal to or less than the Force of Gravity?
Are the forces balanced or unbalanced?
Draw a free body diagram of the forces acting on you. Be sure to draw the size of your arrows appropriately.
What is the Net Force, using Newton’s 2nd Law, while the elevator is decelerating downward?
What is the Normal Force?
What does the scale read as the elevator is decelerating downward?
What pattern did you notice occurred between all of the different scenarios?
Three boxes are shown below. The label in each box shows its mass, The distance between Box A and Box B is the same as the distance between Box B and Box C. Which two boxes have the greatest
gravitational force between them?
Box A
Box B
Box C
20 kg
20 kg
40 kg
Your answer:
Box A and Box B
Box A and Box C
O Box B and Box C
Chapter 4 Solutions
The Physics of Everyday Phenomena
Ch. 4 - Did Galileos work on motion precede in time that...Ch. 4 - Why did Aristotle believe that heavier objects...Ch. 4 - Aristotle believed that a force was necessary to...Ch. 4 - How did Aristotle explain the continued motion of...Ch. 4 - Did Galileo develop a more complete theory of...Ch. 4 - Two equal forces act on two different objects, one...Ch. 4 - A 3-kg block is observed to accelerate at a rate...Ch. 4 - Two equal-magnitude horizontal forces act on a box...Ch. 4 - Is it possible for the final temperature of the...Ch. 4 - Suppose that a bullet is fired from a rifle in...
Ch. 4 - Two equal forces act on an object in the...Ch. 4 - An object moving horizontally across a table is...Ch. 4 - A car goes around a curve traveling at constant...Ch. 4 - Is Newtons first law of motion explained by the...Ch. 4 - Is the mass of an object the same thing as its...Ch. 4 - The gravitational force acting on a lead ball is...Ch. 4 - The acceleration due to gravity on the moon is...Ch. 4 - Is mass a force? Explain.Ch. 4 - Two identical cans, one filled with lead shot and...Ch. 4 - A boy sits at rest on the floor. What two vertical...Ch. 4 - The engine of a car is part of the car and cannot...Ch. 4 - It is difficult to stop a car on an icy road...Ch. 4 - A ball hangs from a string attached to the...Ch. 4 - Would the tablecloth trick (see everyday...Ch. 4 - When a magician performs the tablecloth trick (see...Ch. 4 - A sprinter accelerates at the beginning of a...Ch. 4 - A mule is attempting to move a cart loaded with...Ch. 4 - The upward normal force exerted by the floor on a...Ch. 4 - A toy battery-powered tractor pushes a book across...Ch. 4 - If you get into an elevator on the top floor of a...Ch. 4 - If the elevator cable breaks and you find yourself...Ch. 4 - Two masses, m1 and m2, connected by a string, are...Ch. 4 - Two blocks with the same mass are connected by a...Ch. 4 - Suppose that a skydiver wears a specially...Ch. 4 - Prob. 35CQCh. 4 - Prob. 36CQCh. 4 - Prob. 1ECh. 4 - Prob. 2ECh. 4 - Prob. 3ECh. 4 - Prob. 4ECh. 4 - Prob. 5ECh. 4 - Prob. 6ECh. 4 - Prob. 7ECh. 4 - Prob. 8ECh. 4 - Prob. 9ECh. 4 - Prob. 10ECh. 4 - Prob. 11ECh. 4 - Prob. 12ECh. 4 - One of the authors of this text has a weight of...Ch. 4 - Prob. 14ECh. 4 - Prob. 15ECh. 4 - Prob. 16ECh. 4 - Prob. 17ECh. 4 - Prob. 18ECh. 4 - Prob. 19ECh. 4 - Prob. 1SPCh. 4 - Prob. 2SPCh. 4 - Prob. 3SPCh. 4 - Prob. 4SPCh. 4 - Prob. 5SPCh. 4 - Prob. 6SPCh. 4 - Prob. 7SP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- (a) Find the magnitude of the gravitational force between a planet with mass 7.50 1024 kg and its moon, with mass 2.70 1022 kg, if the average distance between their centers is 2.80 108 m. (b) What is the acceleration of the moon towards the planet? (c) What is the acceleration of the planet towards the moon?arrow_forwardTwo black holes (the remains of exploded stars), separated by a distance of 10.0 AU (1 AU = 1.50 1011 m), attract one another with a gravitational force of 8.90 1025 N. The combined mass of the two black holes is 4.00 1030 kg. What is the mass of each black hole?arrow_forwardTwo ships of equal mass are 101 m apart. What is the acceleration of either ship due to the gravitational attraction of the other? Treat the ships as particles and assume each has a mass of 38,000 metric tons. (Give the magnitude of your answer in m/s2.) ........ ..............: Equate Newton's law of universal gravitation to Newton's second law, and solve your equation for a. Recall that 1 metric ton = 1,000 kg. m/s?arrow_forward
- John (70.0 kg) is standing 2.50 m away from Sam (60.0 kg). Find the gravitational force between John and Sam. Possible Formulas that can be used to solve the question: v=(2πr)/T ac=v2/r ac=(4π2r)/T2 Fc=mac Fg=mg F=(Gm1m2)/d2 g=Gm/r2 T2=(4π2/Gm)r3 v=√(Gm)/r g=9.80m/s2 G=6.67x10-11 (N∙m2)/kg2arrow_forwardAnswer the following questions: a. Daryl is given a mission to travel to the moon. He arrived at the moon and measured his weight to be 85N. If his mass is 72.5 kg, what is the gravitational acceleration to the moon? b. The gravitational pull of an object in the moon is 1/8 of that on earth. If Daryl's mass is 72.5 kg, what is his weight on the moon?arrow_forwardThe figure below shows the trajectory of a particle of mass m bound to an object of mass M by the Newtonian gravitational force. M mg T X m Which of the following magnitudes of net force are applicable to the mass m at the INSTANTANEOUS location shown? mv²/r Mv²/r Mg GMm/r² Varrow_forward
- Two ships of equal mass are 104 m apart. What is the acceleration of either ship due to the gravitational attraction of the other? Treat the ships as particles and assume each has a mass of 39,000 metric tons. (Give the magnitude of your answer in m/s.) m/s?arrow_forwardThe James Webb space telescope (JWST) (mass of about 6500 kg) orbits the Sun (m = 1.99 x 10 ^ 30 kg) at 1.5 x 10^9 m. a) Determine the gravitational force of attraction of the sun on the James Webb telescope. b) Determine the gravitational force of attraction between the earth and the JWST, given earth's mass is 6 x 10^24 kg and the distance between earth and the JWST is 1.5 million km (1.5 x 10^9m). c). Make a brief assessment of how the forces compare using your results for parts a) and b) stating which force is more and which is less significant on the JWST.arrow_forwardConcern 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.arrow_forward
- Directions: Steve and lan are astronauts sent on a mission to a new planet where the gravitational field strength near the surface is 3.90 N/kg. Complete the table below and answer the given questions. MASS WEIGHT LOCATION Steve lan Steve lan On Earth 42 kg 50 kg N N On the new planet 42 kg 50 kg N N In space 42 kg 50 kg ON ONarrow_forwardThere is a gravitational force of 15.0 N between two objects. If the mass of each object is tripled, what would be the gravitational force between the objects? A 5 N 15 N C 45 N D 135 N O O O Oarrow_forwardA 70.0 kg astronaut is in a spacewalk within a 148 kg manned maneuvering unit. The astronaut is 100.0 m away from the space shuttle orbiter (m = 7. 80 · 10*kg). What is the magnitude of the gravitational force between the shuttle orbiter and the astronaut? (G = 6. 67 · 10–11 Nm² /kg?) 1. 13 · 10-5N A 1. 13 · 10-7N B 3. 64 · 10-8 N 7. 70 · 10-8Narrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
Physics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage Learning
College PhysicsPhysicsISBN:9781305952300Author:Raymond A. Serway, Chris VuillePublisher:Cengage Learning
Physics for Scientists and Engineers: Foundations...
Physics
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Cengage Learning
Principles of Physics: A Calculus-Based Text
Physics
ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
Publisher:Cengage Learning
College Physics
Physics
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Cengage Learning
Gravitational Force (Physics Animation); Author: EarthPen;https://www.youtube.com/watch?v=pxp1Z91S5uQ;License: Standard YouTube License, CC-BY