Tutorials in Introductory Physics
1st Edition
ISBN: 9780130970695
Author: Peter S. Shaffer, Lillian C. McDermott
Publisher: Addison Wesley
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Textbook Question
Chapter 2.2, Problem 1eT
Rank the magnitudes of the horizontal forces that you identified on your free-body diagrams in part B. (Hint: Recall that the bricks are pushed so that they move at constant speed.)
Dis you apply Newton's second law in the comparing the magnitudes of the horizontal forces? If so, how?
Dis you apply
What information besides Newton's laws did you need to apply in comparing the magnitudes of the horizontal forces?
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The figure above shows free-body diagrams for the cart mc and the hanging mass mh in terms of the gravitational force mg, tension T, normal force N, and frictional force Ff=μkN.
Q1: Based on the mc free-body diagram, type an expression for the horizontal acceleration of the cart.
Q2: Based on the mh free-body diagram, type an expression for the vertical acceleration of the hanging mass.
Q3: As shown in the first figure, the horizontal acceleration of the cart to the right must be equal to the downward vertical acceleration of the hanging mass if the string does not stretch. Given that both the cart and the hanging mass have the same acceleration, eliminate the tension force (T) from your answers to Q1 and Q2 to find an expression for the acceleration only in terms of mh, mc, μk, and g.
explanations of every step.
State the rate of acceleration of gravity in SI units and in the English-Imperial
Consider a 25 lbf object. Calculate its mass and report your answer in slugs.
Show your unit conversions.
Consider a 25 kg object. Calculate its weight and report your answer in kN.
Show your unit conversions.
Consider a 25 slug object. Calculate its weight and report your answer in lbf.
Show your unit conversions.
Consider a 25 g object. Calculate its weight and report your answer in N.
Show your unit conversions.
a)
b
c)
d
e
solve the following engineering physics problems with detailed
units.
Your little brother is playing with monkeys in a barrel. The mass of each monkey is indicated in the illustration on the right. Note that your brother is holding the monkeys still and his hand weighs 50 N.
Use Newton’s 1st and 3rd laws to numerically determine all of the forces acting on the monkeys and the hand. If necessary, redraw your Force Diagrams, so they are more to scale.
Chapter 2 Solutions
Tutorials in Introductory Physics
Ch. 2.1 - Draw a large dot on your large sheet of paper to...Ch. 2.1 - Describe the remaining forces you have indicated...Ch. 2.1 - All forces arise from interactions between...Ch. 2.1 - There are many different types of forces,...Ch. 2.1 - Consider the following discussion between two...Ch. 2.1 - Label each of the forces on your free-body diagram...Ch. 2.1 - Sketch a free-body diagram for a book at rest on a...Ch. 2.1 - A second book of greater mass is placed on top of...Ch. 2.1 - Compare the free-body diagram for the lower book...Ch. 2.1 - Which, if any, Newton’s third law force pairs are...
Ch. 2.1 - A magnet is supported by another magnet as shown...Ch. 2.1 - An iron rod is held up by a magnet as shown. The...Ch. 2.2 - Compare the net force (magnitude and direction) on...Ch. 2.2 - Draw separate free-body diagrams for system A and...Ch. 2.2 - Is the magnitude of the force exerted on system A...Ch. 2.2 - D. Identify all the Newton's third law...Ch. 2.2 - Rank the magnitudes of the horizontal forces that...Ch. 2.2 - Suppose the mass of each brick is 2.5 kg, the...Ch. 2.2 - Describe the motions of systems A and B. How does...Ch. 2.2 - Compare the net force (magnitude and direction) on...Ch. 2.2 - Draw and label separate free-body diagrams for...Ch. 2.2 - Consider the following discussion between two...Ch. 2.2 - Rank the magnitudes of all the horizontal forces...Ch. 2.2 - Compare the magnitude of the netforce on system C...Ch. 2.2 - Draw and label a free-body diagram for system C....Ch. 2.2 - At right is a free-body diagram for a cart. All...Ch. 2.3 - Describe the motions of block A, block B, and the...Ch. 2.3 - On a large sheet of paper, draw a separate...Ch. 2.3 - Identify all the Newton's third law...Ch. 2.3 - Rank, from largest to smallest, the magnitudes of...Ch. 2.3 - Consider the horizontal components of the forces...Ch. 2.3 - If the motion of the blocks is the same as in...Ch. 2.3 - Suppose the mass of the string that connects...Ch. 2.3 - A string exerts a force on each of the two objects...Ch. 2.3 - If you know that the net force on a massless...Ch. 2.3 - Predict the subsequent motions of objects A and B...Ch. 2.3 - Draw separate free-body diagrams for objects A and...Ch. 2.3 - Predict: • what will happen to object C when it is...Ch. 2.3 - Draw and label separate free-body diagrams for...Ch. 2.3 - The weight of a 200 g mass has magnitude...Ch. 2.3 - Consider the following statement about the...
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