University Physics Volume 11st EditionSamuel J Ling Jeff, Sanny, William Moebs Publisher: OpenStaxISBN: 9781630182137
University Physics Volume 1
Solutions for University Physics Volume 1
Problem 5.1CYU:
Check Your Understanding Find the magnitude and direction of the net force in the ice skater example...Problem 5.2CYU:
Check Your Understanding A skydiver opens his parachute, and shortly thereafter, he is moving at...Problem 5.3CYU:
Check Your Understanding At the time of its launch, the HMS Titanic was the most massive mobile...Problem 5.4CYU:
Check Your Understanding A 550-kg sports car collides with a 2200-kg truck, and during the...Problem 5.5CYU:
Check Your Understanding A car gas forces acting on it, as shown below. The mass of the car is...Problem 5.6CYU:
Check Your Understanding For Example 5.8, find the acceleration when farmer’s applied force is 230.0...Problem 5.7CYU:
Check Your Understanding Two blocks are at rest and in contact on a frictionless surface as shown...Problem 5.8CYU:
Check Your Understanding A force of 1150 N acts parallel to a ramp to push a 250-kg gun safe into a...Problem 5.9CYU:
Check Your Understanding One end of a 3.0-m rope is tied to a tree; the other, end is tied to a car...Problem 5.10CYU:
Check Your Understanding (a) Draw the free-body diagram for the situation shown. (b) Redraw it...Problem 2CQ:
Taking a frame attached to Earth as inertial, which of the following objects cannot have inertial...Problem 3CQ:
A woman was transporting an open box of cupcakes to a school party. The car in front of her stopped...Problem 4CQ:
Why can we neglect forces such as those holding a body together when we apply Newton’s second law?Problem 5CQ:
A rock is thrown straight up. At the top of the trajectory, the velocity is momentarily zero. Does...Problem 6CQ:
What is the relationship between weight and mass? Which is an intrinsic, unchanging property of a...Problem 7CQ:
How much does a 70-kg astronaut weight in space, far from any celestial body? What is her mass at...Problem 8CQ:
Which of the following statements is accurate? (a) Mass and weight are the same thing expressed In...Problem 9CQ:
When you stand on Earth, your feet push against it with a force equal to your weight. Why doesn’t...Problem 10CQ:
How would you give the value of g in vector form?Problem 11CQ:
Newton’s Third Law Identity the action and reaction forces in the following situations: (a) Earth...Problem 12CQ:
Suppose that you are holding a cup of coffee in your hand. Identify all forces on the cup and the...Problem 13CQ:
(a) Why does an ordinary rifle recoil (kick backward) when fired? (b) The barrel of a recoilless...Problem 14CQ:
Common Forces A table is placed on a rug. Then a book is placed on the table. What does the floor...Problem 15CQ:
A particle is moving to the right. (a) Can the force on it be acting to the left? If yes, what would...Problem 16CQ:
Drawing Free-Body Diagrams In completing the solution for a problem involving forces, what do we do...Problem 17CQ:
If a book is located on a table, how many forces should be shown in a free-body diagram of the book?...Problem 18CQ:
If the book in the previous question is in free fall, how many forces should be shown in a free-body...Problem 19P:
Two ropes are attached to a tree, and forces of and are applied. The forces are coplanar (In the...Problem 20P:
A telephone pole has three cables pulling as shown from above, with and (a) Find the net force on...Problem 21P:
Two teenagers are pulling on ropes attached to a tree. The angle between the ropes is 30 . David...Problem 22P:
Two forces of and act on an object. Find the third force that is needed to balance the first two...Problem 23P:
While sliding a couch across a floor, Andrea and Jennifer exert forces FA and FJ on the couch....Problem 24P:
Newton’s Second Law Andrea, a 63.0-kg sprinter, starts a race with an acceleration of 4.200m/s2 ....Problem 25P:
If the sprinter from the previous problem accelerates at that rate for 20.00 m and then maintains...Problem 26P:
A cleaner pushes a 4.50-kg laundry cart in such a way that the net external force on it is 60.0 N....Problem 27P:
Astronauts in orbit are apparently weightless. This means that a clever method of measuring the mass...Problem 28P:
In Figure 5.12, the net external force on the 24-kg mower is given as 51 N. If the force of friction...Problem 29P:
The rocket sled shown below decelerates at a rate of 196m/s2 . What force is necessary to produce...Problem 30P:
If the rocket sled shown in the previous problem starts with only one rocket burning, what is the...Problem 31P:
What is the deceleration of the rocket sled if it comes to rest in 1.10 s from a speed of 1000.0...Problem 32P:
Suppose two children push horizontally, but in exactly opposite directions, on a third child in a...Problem 33P:
A powerful motorcycle can produce an acceleration of 3.50m/s2 while traveling at 90.0 km/h. At that...Problem 34P:
A car with a mass of 1000.0 kg accelerates from 0 to 90.0 km/h in 10.0 s. (a) What is its...Problem 35P:
The driver in the previous problem applies the brakes when the car is moving at 90.0 km/h, and the...Problem 36P:
An 80.0-kg passenger in an SUV traveling at 1.00103km/h is wearing a seat belt. The driver slams on...Problem 37P:
A particle of mass 2.0 kg is acted on by a single force (a) What is the particle’s acceleration? (b)...Problem 38P:
Suppose that the particle of the previous problem also experiences forces and What is its...Problem 40P:
In the following figure, the horizontal surface on which this block slides is frictionless. If the...Problem 41P:
Mass and Weight The weight of an astronaut plus his space suit on the Moon is only 250 N. (a) How...Problem 42P:
Suppose the mass of a fully loaded module in which astronauts take off from the Moon is 1.00104kg ....Problem 43P:
A rocket sled accelerates at a rate of 49.0m/s2 . Its passenger has a mass of 75.0 kg. (a) Calculate...Problem 44P:
Repeat the previous problem for a situation in which the rocket sled decelerates at a rate of...Problem 45P:
A body of mass 2.00 kg is pushed straight upward by a 25.0 N vertical force. What is its...Problem 46P:
A car weighing 12,500 N stalls from rest and accelerates to 83.0 km/h in 5.00 s. The friction force...Problem 47P:
A body with a mass of 10.0 kg is assumed to be in Earth’s gravitationaI field with g=9.80m/s2 . What...Problem 48P:
A fireman has mass m ; he hears the fire alarm and slides down the pole with acceleration a (which...Problem 49P:
A baseball catcher is performing a stunt for a television commercial. He will catch a baseball (mass...Problem 50P:
When the Moon is directly overhead at sunset, the force by Earth on the Moon FEM , is essentially at...Problem 51P:
(a) What net external force is exerted on a 1100.0-kg artillery shell fired from a battleship if the...Problem 52P:
A brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a...Problem 53P:
A history book is lying on top of a physics book on a desk, as shown below a free-body diagram is...Problem 54P:
A truck collides with a car, and during the collision, the net force on each vehicle is essentially...Problem 55P:
Common Forces A leg is suspended in a traction system, as shown below (a) Which pulley in the figure...Problem 56P:
Suppose the shinbone in the preceding image was a femur in a traction setup for a broken bone, with...Problem 57P:
Two teams of nine members each engage in tug-of-war. Each of the first team’s members has an average...Problem 58P:
What force does a trampoline have to apply to Jennifer, a 45.0-kg gymnast, to accelerate her...Problem 59P:
(a) Calculate the tension in a vertical strand of spider web if a spider of mass 2.00105kg hangs...Problem 60P:
Suppose Kevin, a 60.0-kg gymnast, climbs a rope. (a) What Is the tension in the rope if he climbs at...Problem 61P:
Show that, as explained in the text, a force F exerted on a flexible medium at its center and...Problem 62P:
Consider Figure 5.28. The driver attempts to get the car out of the mud by exerting a perpendicular...Problem 63P:
A bird has a mass of 26g and perches in the middle of a stretched telephone line. (a) Show that the...Problem 64P:
-m rope is tied to a tree; the other end is tied to a car stuck in the mud. The motorist pulls...Problem 65P:
Consider the baby being weighed in the following figure. (a) What is the mass of the infant and...Problem 66P:
What force must be applied to a 100.0-kg crate on a frictionless plane inclined at 30 to cause an...Problem 67P:
A 2.0-kg block is on a perfectly smooth ramp that makes an angle of 30 with the horizontal. (a) What...Problem 68P:
Drawing Free-Body Diagrams A ball of mass m hangs at rest, suspended by a sting. (a) Sketch all...Problem 69P:
A car moves along a horizontal road. Draw a free- body diagram; be sure to include the friction of...Problem 70P:
A runner pushes against the track, as shown. (a) Provide a free-body diagram showing all the forces...Problem 71P:
The traffic light hangs from the cables as shown. Draw a free-body diagram on a coordinate plane for...Problem 72AP:
Two small forces, F1=2.40i6.10tj N and F2=8.50i9.70j N , are exerted on a rogue asteroid by a pair...Problem 73AP:
Two forces of 25 and 45 N act on an object. Their directions differ by 70 . The resulting...Problem 74AP:
A force of 1600 N acts parallel to a ramp to push a 300-kg piano into a moving van. The ramp is...Problem 75AP:
Draw a free-body diagram of a diver who has entered the water, moved downward, and is acted on by an...Problem 76AP:
For a swimmer who has just jumped off a diving board, assume air resistance is negligible. The...Problem 77AP:
(a) Find an equation to determine the magnitude of the net force required to stop a car of mass m,...Problem 78AP:
A sailboat has a mass of 1.50103kg and is acted on by a force of 2.00103N toward the east, while the...Problem 80AP:
A body of mass 2.0 kg is moving along the x -axis with a speed of 3.0 m/s at the instant represented...Problem 81AP:
Force FBhas twice the magnitude of force FA. Find the direction in which the particle accelerates in...Problem 82AP:
Shown below is a body of mass 1.0 kg under the influence of the forces FA,FB ,and mg . If the body...Problem 83AP:
A force acts on a car of mass m so that the speed v of the car increases with position x as v=kx2...Problem 84AP:
A 7.0-N force parallel to an incline is applied to a 1.0-kg crate. The ramp is tilted at 20 and is...Problem 85AP:
Two boxes, A and B, are at rest Box A is on level ground, while box B rests on an inclined plane...Problem 86AP:
A mass of 250.0 g is suspended from a spring hanging vertically. The spring stretches 6.00 cm. How...Problem 87AP:
As shown below, two identical springs, each with the spring constant 20 N/m, support a 15.0-N...Problem 88AP:
Shown below is a 30.0-kg block resting on a frictionless ramp inclined at 60 to the horizontal. The...Problem 89AP:
In building a house, carpenters use nails from a large box. The box is suspended from a spring twice...Problem 90AP:
A force is applied to a block to move it up a 30 incline. The incline is frictionless. If F=65.0Nand...Problem 91AP:
Two forces are applied to a 5.0-kg object, and it accelerates at a rate of 2.0m/s2 in the positive y...Problem 92AP:
The block on the tight shown below has more mass than the block on the left (m2m1). Draw free-body...Problem 93CP:
If two tugboats pull on a disabled vessel, as shown here in an overhead view, the disabled vessel...Problem 94CP:
A 10.0-kg object is initially moving east at 15.0 m/ s. Then a force acts on it for 2.00 s, after...Problem 95CP:
On June 25, 1983, shot-putter Udo Beyer of East Germany threw the 7.26-kg shot 22.22 m, which at...Problem 96CP:
A body of mass m moves in a horizontal direction such that at time t its position is given by...Problem 97CP:
A body of mass m has initial velocity v0 in the positive x -direction. It is acted on by a constant...Problem 98CP:
The velocities of a 3.0-kg object at and are and respectively. If the object is moving at constant...Problem 99CP:
A 120-kg astronaut is riding in a rocket sled that is sliding along an inclined plane. The sled has...Problem 100CP:
Two forces are acting on a 5.0-kg object that moves with acceleration 2.0m/s2 in the positive y...Problem 101CP:
Suppose that you are viewing a soccer game from a helicopter above the playing field. Two soccer...Problem 102CP:
A 10.0-kg mass hangs from a spring that has the spring constant 535 N/m. Find the position of the...Problem 103CP:
A 0.0502-kg pair of fuzzy dice is attached to the rearview mirror of a car by a short string. The...Problem 104CP:
At a circus, a donkey pulls on a sled carrying a small clown with a force given by . A horse pulls...Problem 105CP:
Hanging from the ceiling over a baby bed, well out of baby’s reach, is a string with plastic shapes,...Problem 106CP:
A bullet shot from a rifle has mass of 10.0 g and travels to the right at 350 m/s. It strikes a...Problem 107CP:
An object is acted on by three simultaneous forces: F1=(3.00i+2.00j)N , F2=(6.00i4.00j)N , and...Browse All Chapters of This Textbook
Chapter 1 - Units And MeasurementChapter 2 - VectorsChapter 3 - Motion Along A Straight LineChapter 4 - Motion In Two And Three DimensionsChapter 5 - Newton's Law Of MotionChapter 6 - Applications Of Newton's LawsChapter 7 - Work And Kinetic EnergyChapter 8 - Potential Energy And Conservation Of EnergyChapter 9 - Linear Momentum And CollisionsChapter 10 - Fixed-axis Rotation
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