COLLEGE PHYSICS
2nd Edition
ISBN: 9781711470832
Author: OpenStax
Publisher: XANEDU
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Chapter 5, Problem 1TP
To determine
The coefficient of static friction.
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A box is pulled at a constant speed, v, along a horizontal surface with a kinetic coefficient of friction less than 1.
The person pulls with a constant horizontal force, F, on the box.
The constant horizontal force the person pulls with:
A. Has the same size as the weight of the box.
B. Is greater than the weight of the box.
C. Is less than the weight of the box.
D. Is greater than the friction force.
A 10kg block is pressed against a vertical wall and held in place by a force F of 150 N, 37 degrees above the horizontal. The coefficient of static friction is μs= 0.10. The magnitude and direction of the frictional force is
A. 12 N downward
B. 12 N upward
C. 0.0 N
D. 7.7 N downward
E. 7.7 N upward
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Chapter 5 Solutions
COLLEGE PHYSICS
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Ch. 5 - Examine different types of shoes, including sports...Ch. 5 - Would you expect your height to be different...Ch. 5 - Why can a squirrel from a tree branch to the...Ch. 5 - Explain why pregnant women often suffer from back...Ch. 5 - An old carpenter's trick to keep nails from...Ch. 5 - When a glass bottle full of vinegar warms up, both...Ch. 5 - A physics major is cooking breakfast when he...Ch. 5 - (a) When rebuilding her car's engine, a physics...Ch. 5 - (a) What is the maximum frictional force in the...Ch. 5 - Suppose you have a 120-kg wooden crate resting on...Ch. 5 - (a) If half of the weight of a small 1.00103 kg...Ch. 5 - A team of eight dogs pulls a sled with waxed wood...Ch. 5 - Consider the 65.0-kg ice skater being pushed by...Ch. 5 - Show that the acceleration of any object down a...Ch. 5 - Show that the acceleration of any object down an...Ch. 5 - Calculate the deceleration of a snow boarder going...Ch. 5 - (a) Calculate the acceleration of a skier heading...Ch. 5 - If an object is to rest on an incline without...Ch. 5 - Calculate the maximum deceleration of a car that...Ch. 5 - Calculate the maximum acceleration of a car that...Ch. 5 - Repeat Exercise 5.14 for a car with four-wheel...Ch. 5 - A freight train consists of two 8.00105 -kg...Ch. 5 - Consider the 52.0-kg mountain climber in Figure...Ch. 5 - A contestant in a winter sporting event pushes a...Ch. 5 - Repeat Exercise 5.18 with the contestant pulling...Ch. 5 - The terminal velocity of a person falling in air...Ch. 5 - A 60-kg and a go-kg skydiver jump from an airplane...Ch. 5 - A 560-g squirrel with a surface area of 930 cm2...Ch. 5 - To maintain a constant speed, the force provided...Ch. 5 - By what factor does the drag force on a car...Ch. 5 - Calculate the speed a spherical rain drop would...Ch. 5 - Using Stokes' law, verify that the units for...Ch. 5 - Find the terminal velocity of a spherical...Ch. 5 - Stokes' law describes sedimentation of particles...Ch. 5 - During a circus act, one performer swings upside...Ch. 5 - During a wrestling match, a 150 kg wrestler...Ch. 5 - (a) The "lead" in pencils is a graphite...Ch. 5 - TV broadcast antennas are the tallest artificial...Ch. 5 - (a) By how much does a 65.0-kg mountain climber...Ch. 5 - A 20.0-m tall hollow aluminum flagpole is...Ch. 5 - As an oil well is drilled, each new section of...Ch. 5 - Calculate the force a piano tuner applies to...Ch. 5 - A vertebra is subjected to a shearing force of 500...Ch. 5 - A disk between vertebrae in the spine is subjected...Ch. 5 - When using a pencil eraser, you exert a vertical...Ch. 5 - To consider the effect of wires hung on poles, we...Ch. 5 - A farmer making grape juice fills a glass bottle...Ch. 5 - (a) When water freezes, its volume increases by...Ch. 5 - This problem returns to the tightrope walker...Ch. 5 - The pole in Figure 5.24 is at a 90.0° bend in a...Ch. 5 - Prob. 1TPCh. 5 - Prob. 2TPCh. 5 - Prob. 3TPCh. 5 - Prob. 4TP
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- A uniform pole is propped between the floor and the ceiling of a room. The height of the room is 7.80 ft, and the coefficient of static friction between the pole and the ceiling is 0.576. The coefficient of static friction between the pole and the floor is greater than that between the pole and the ceiling. What is the length of the longest pole that can be propped between the floor and the ceiling?arrow_forwardConsider a large truck carrying a heavy load, such as steel beams. A significant hazard for the driver is that the load may slide forward, crushing the cab, if the truck stops suddenly in an accident or even in braking. Assume, for example, a 10 000-kg load sits on the flatbed of a 20 000-kg truck moving at 12.0 m/s. Assume the load is not tied down to the truck and has a coefficient of static friction of 0.500 with the truck bed. (a) Calculate the minimum stopping distance for which the load will not slide forward relative to the truck. (b) Is any piece of data unnecessary for the solution?arrow_forwardIn Problem 10, the mass of the sign is 25.4 kg, and the mass of the potted plant is 66.7 kg. a. Assuming the objects are in equilibrium, determine the magnitude of the static friction force experienced by the potted plant. b. What is the maximum value of the static friction force if the coefficient of static friction between the pot and the roof is 0.572?arrow_forward
- A 15.0-lb block rests on the floor. (a) What force does the floor exert on the block? (b) A rope is tied to the block and is run vertically over a pulley. The other end is attached to a free-handing 10.0-lb object. What now is the force exerted by the floor on the 15.0-lb block? (c) If the 10.0-lb object in part (b) is replaced with a 20.0-lb object, what is the force exerted by the floor on the 15.0-lb block?arrow_forwardIf a horizontal force is applied to an object, how can you tell if an object will start moving? A.The object will start moving if any force is applied. B.The object will start moving if the applied force is greater than the maximum static friction. C.The object will start moving if the applied force is greater than the minimum static friction. D.The object will start moving if the applied force is greater than the maximum kinetic friction. E.The object will start moving if the applied force is greater than the minimum kinetic frictionarrow_forward7. Suppose a 25.0 kg block rests on a horizontal plane, and the static friction coefficient between the surfaces is 0.220. (a) What is the maximum allowable static frictional force that could act on the block? (b) What is the actual static frictional force acting on the block if a 25.0 N external force acts horizontally? Assume g 9.80 m/s.arrow_forward
- A box is pulled at a constant speed, v, along a horizontal surface with a kinetic coefficient of friction less than 1. The person pulls with a constant horizontal force, F, on the box. The constant horizontal force the person pulls with: 1. Has the same size as the weight of the box. 2. Is greater than the weight of the box. 3. Is less than the weight of the box. 4. Is greater than the friction force.arrow_forward3 14 F The horizontal force F pulls a heavy suspended mass to the side. al force p DO In static equilibrium, the angle is constant. If m = 74.70 kg, and the angle = 33.60 degrees, then what is F? (in N) OA: 303.99 B: 355.67 OC: 416.13 OD: 486.88 OE: 569.64 OF: 666.48 OG: 779.79 OH: 912.35arrow_forward3. A boy sits on a tire swing that is attached to a rope. The rope passes over a pulley fastened to the ceiling, and then passes back down to the boy's hands. If the weight of the boy plus the tire is w, what is the force with which the boy must pull on the free end of the rope to support the tire?arrow_forward
- The direction of the frictional force is а. same direction of the intended motion b. perpendicular to the direction of the intended motion c. opposite direction of the intended motion d. along the x-directionarrow_forward4. The hand pushes on a flexible metal 8) m sheet with a force of 8 N. The force exerted back on the had by the sheet is (circle one) A. Larger than 8 N. B. Equal to 8 N. C. Smaller than 8 N. D. There is no force. 5. The had pushes on a wall with a force of 8 N. The force exerted back on the hand by the wall is (circle one) A. Larger than 8 N. Indan B. Equal to 8 N. C. Smaller than 8 N. D. There is no force. 6. The book weighs 8 N. The force exerted by the table on the book is (circle one) 2 A. Larger than 8 N. B. Equal to 8 N. C. Smaller than 8 N. D. There is no force. solsy 7. What causes the force exerted by the wall on the hand? How does the wall "know" what force to exert back on the hand? bei sauge Questions 8-11 refer to the block on a flat surface shown below. A force is applied to the block as shown. With a force up to 1.5 N, the block does not move. A force of 1.5 N is enough to just make the block begin to move. After the block starts moving, it is pulled so that it moves…arrow_forward4. The force system shown consists of the couple C and four forces. If the resultant of this system is a 75000-N mm counterclockwise couple, determine P, Q, and C. Q y 12 A 400 N 100 N 30 mm B 30 mm² Xarrow_forward
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