PHYSICS F/SCI.+ENGR.,V.1 (CHAP.1-20)
5th Edition
ISBN: 9780134378053
Author: GIANCOLI
Publisher: RENT PEARS
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A 50-N crate sits on a horizontal floor where the coefficient of static friction between the crate and the floor is 0.50.A 20-N force is applied to the crate acting to the right. What is the resulting static friction force acting on the crate?(a) 20 N to the right.(b) 20 N to the left.(c) 25 N to the right.(d) 25 N to the left.(e) None of the above; the crate starts to move.
A box of mass 0.8 kg is placed on an inclined surface that makes an angle 30° above
the horizontal, Figure A constant force of 18 N is applied on the box in a direction 10
with the horizontal causing the box to accelerate up the incline. The coefficient of
kinetic friction between the block and the plane is 0.25.
(a) Calculate the block's acceleration as it moves up the incline.
(b) If the block slides down at a constant speed, find the value of force applied.
30
(a) If half of the weight of a flatbed truck is supported by its two drive wheels, what is the maximum acceleration (in m/s?) it can achieve on wet concrete where the
coefficient of kinetic friction is 0.5 and the coefficient of static friction is 0.7.
3.43
m/s?
(b) Will a metal cabinet lying on the wooden bed of the truck slip if it accelerates at this rate where the coefficient of kinetic friction is 0.3 and the coefficient of static
friction is 0.55?
O No
O Yes
(c) If the truck has four-wheel drive, and the cabinet is wooden, what is it's maximum acceleration (in m/s²)?
4.9
x m/s2
Will it slip?
O Yes
O No
Chapter 5 Solutions
PHYSICS F/SCI.+ENGR.,V.1 (CHAP.1-20)
Ch. 5.1 - If s = 0.40 and mg = 20 N, what minimum force F...Ch. 5.1 - Prob. 1BECh. 5.2 - Prob. 1CECh. 5.2 - If the radius is doubled to 1.20m but the period...Ch. 5.3 - Prob. 1EECh. 5.3 - A rider on a Ferris wheel moves in a vertical...Ch. 5.4 - Prob. 1GECh. 5.4 - Can a heavy truck and a small car travel safely at...Ch. 5.5 - When the speed of the race car in Example 516 is...Ch. 5 - A heavy crate rests on the bed of a flatbed truck....
Ch. 5 - A block is given a push so that it slides up a...Ch. 5 - Cross-country skiers prefer their skis to have a...Ch. 5 - Prob. 4QCh. 5 - It is not easy to walk on an icy sidewalk without...Ch. 5 - Why is the stopping distance of a truck much...Ch. 5 - A car rounds a curve at a steady 50 km/h. If it...Ch. 5 - Will the acceleration of a car be the same when a...Ch. 5 - Describe all the forces acting on a child riding a...Ch. 5 - A child on a sled comes flying over the crest of a...Ch. 5 - Sometimes it is said that water is removed from...Ch. 5 - Technical reports often specify only the rpm for...Ch. 5 - A girl is whirling a ball on a string around her...Ch. 5 - The game of tetherball is played with a ball tied...Ch. 5 - Astronauts who spend long periods in outer space...Ch. 5 - A bucket of water can be whirled in a vertical...Ch. 5 - A car maintains a constant speed v as it traverses...Ch. 5 - Why do bicycle riders lean in when rounding a...Ch. 5 - Why do airplanes bank when they turn? How would...Ch. 5 - For a drag force of the form F = bv, what are the...Ch. 5 - Suppose two forces act on an object, one force...Ch. 5 - Prob. 2MCQCh. 5 - Prob. 3MCQCh. 5 - Prob. 4MCQCh. 5 - Prob. 5MCQCh. 5 - Prob. 6MCQCh. 5 - Prob. 7MCQCh. 5 - Prob. 8MCQCh. 5 - Prob. 9MCQCh. 5 - Prob. 12MCQCh. 5 - Prob. 13MCQCh. 5 - Prob. 1PCh. 5 - Prob. 2PCh. 5 - (I) Suppose you are standing on a train...Ch. 5 - (I) The coefficient of static friction between...Ch. 5 - Prob. 5PCh. 5 - Prob. 6PCh. 5 - (II) A car can decelerate at 3.80 m/s2 without...Ch. 5 - Prob. 8PCh. 5 - Prob. 9PCh. 5 - (II) A box is given a push so that it slides...Ch. 5 - (II) A skier moves down a 27 slope at constant...Ch. 5 - (II) A wet bar of soap slides freely down a ramp...Ch. 5 - Prob. 13PCh. 5 - Prob. 14PCh. 5 - Prob. 15PCh. 5 - (II) Police investigators, examining the scene of...Ch. 5 - (II) Piles of snow on slippery roofs can become...Ch. 5 - Prob. 18PCh. 5 - (II) Two crates, of mass 65 kg and 125 kg, are in...Ch. 5 - Prob. 20PCh. 5 - (II) A crate is given an initial speed of 3.0 m/s...Ch. 5 - (II) A flatbed truck is carrying a heavy crate....Ch. 5 - Prob. 23PCh. 5 - Prob. 24PCh. 5 - (II) A package of mass m is dropped vertically...Ch. 5 - (II) Two masses mA = 2.0 kg and mB = 5.0 kg are on...Ch. 5 - Prob. 27PCh. 5 - (II) (a) Suppose the coefficient of kinetic...Ch. 5 - Prob. 29PCh. 5 - (II) For two blocks, connected by a cord and...Ch. 5 - Prob. 31PCh. 5 - (III) A 3.0-kg block sits on top of a 5.0-kg block...Ch. 5 - (III) A 4.0-kg block is stacked on top of a...Ch. 5 - (III) A small block of mass m rests on the rough...Ch. 5 - Prob. 35PCh. 5 - Prob. 36PCh. 5 - Prob. 37PCh. 5 - (I) A jet plane traveling 1890 km/h (525 m/s)...Ch. 5 - Prob. 39PCh. 5 - Prob. 40PCh. 5 - Prob. 41PCh. 5 - (II) How fast (in rpm) must a centrifuge rotate if...Ch. 5 - Prob. 43PCh. 5 - (II) Redo Example 511, precisely this time, by not...Ch. 5 - (II) Highway curves are marked with a suggested...Ch. 5 - Prob. 46PCh. 5 - (II) At what minimum speed must a roller coaster...Ch. 5 - Prob. 48PCh. 5 - Prob. 49PCh. 5 - Prob. 50PCh. 5 - Prob. 51PCh. 5 - Prob. 52PCh. 5 - Prob. 53PCh. 5 - Prob. 54PCh. 5 - Prob. 55PCh. 5 - Prob. 56PCh. 5 - Prob. 57PCh. 5 - (II) Two blocks with masses mA and mB, are...Ch. 5 - Prob. 59PCh. 5 - Prob. 60PCh. 5 - (II) A pilot performs an evasive maneuver by...Ch. 5 - (III) The position of a particle moving in the xy...Ch. 5 - (III) If a curve with a radius of 85 m is properly...Ch. 5 - Prob. 65PCh. 5 - Prob. 67PCh. 5 - Prob. 68PCh. 5 - Prob. 69PCh. 5 - (III) An object of mass m is constrained to move...Ch. 5 - (I) Use dimensional analysis (Section 17) in...Ch. 5 - (II) The terminal velocity of a 3 105 kg raindrop...Ch. 5 - (III) Determine a formula for the position and...Ch. 5 - (III) The drag force on large objects such as...Ch. 5 - (II) An object moving vertically has v=v0at t = 0....Ch. 5 - Prob. 77PCh. 5 - Prob. 78PCh. 5 - (III) A motorboat traveling at a speed of 2.4 m/s...Ch. 5 - A coffee cup on the horizontal dashboard of a car...Ch. 5 - Prob. 81GPCh. 5 - Prob. 82GPCh. 5 - Prob. 83GPCh. 5 - A flat puck (mass M) is revolved in a circle on a...Ch. 5 - In a Rotor-ride at a carnival, people rotate in a...Ch. 5 - Prob. 86GPCh. 5 - Prob. 87GPCh. 5 - The 70.0-kg climber in Fig. 550 is supported in...Ch. 5 - A small mass m is set on the surface of a sphere,...Ch. 5 - Prob. 90GPCh. 5 - Prob. 91GPCh. 5 - Prob. 92GPCh. 5 - Prob. 93GPCh. 5 - Prob. 94GPCh. 5 - Prob. 95GPCh. 5 - A car is heading down a slippery road at a speed...Ch. 5 - Prob. 97GPCh. 5 - A banked curve of radius R in a new highway...Ch. 5 - Earth is not quite an inertial frame. We often...Ch. 5 - Prob. 100GPCh. 5 - Prob. 101GPCh. 5 - A car starts rolling down a 1-in-4 hill (1-in-4...Ch. 5 - The sides of a cone make an angle with the...Ch. 5 - Prob. 104GPCh. 5 - A ball of mass m = 1.0 kg at the end of a thin...Ch. 5 - Prob. 106GP
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- Consider Figure 5.28. The driver attempts to get the car out of the mud by exerting a perpendicular force of 610.0 N, and the distance she pushes in the middle of the rope is 1.00 m while she stands 6.00 m away from the car on the left and 6.00 m away from the tree on the right. What is the tension Tin the rope, and how do you find the answer?arrow_forwardODI 48. (II) A small box is held in place against a rough vertical wall by someone pushing on it with a force directed upward at 28° above the horizontal. The coefficients of static and kinetic friction between the box and wall are 0.40 and 0.30, respectively. The box slides down unless the applied force has magnitude 23 N. What is the mass of the box? 49. (II) Two crates, of mass 65 kg and 125 kg, are in contact and at rest on a horizontal surface (Fig. 4-57). A 650-N force is exerted on the 65-kg crate. If the coefficient of kinetic friction is 0.18, calculate (a) the acceleration of the sys- tem, and (b) the force that each crate exerts on the other. (c) Repeat with the crates reversed. 650 N 65 kg 125 kg FIGURE 4-57 Problem 49. 50. (II) A person pushes a 14.0-kg lawn mower at constant speed with a force of F = 88.0 N directed along the handle, which is at an angle of 45.0° to the horizontal (Fig. 4-58). the bed of abou 56. (II) A erates c impedi friction 57. (II) Th m FIGURE 4-5…arrow_forward(a) If half of the weight of a flatbed truck is supported by its two drive wheels, what is the maximum acceleration it can achieve on wet concrete where the coefficient of kinetic friction is 0.5 and the coefficient of static friction is 0.7. (b) Will a metal cabinet lying on the wooden bed of the truck slip if it accelerates at this rate where the coefficient of kinetic friction is 0.3 and the coefficient of static friction is 0.55? (c) Answer both of these questions for the case that the truck has four-wheel drive, and the cabinet is wooden. Will it slip?arrow_forward
- Can i get help with this problem?arrow_forwardA box of mas 5. 0 kg is held by a rope on a frictionless inclined surface with angle of inclination of 30 as shown. (a) Draw a free body diagram if the rope breaks (b) What will the magnitude of the acceleration of the box be if the rope breaks?arrow_forward] A block of mass ? rests on a fixed plane inclined at an angle ?. You apply a horizontal force of magnitude ?? on the block, as shown in the figure.Assume that the friction force between the block and the plane is large enough to keep the block at rest. For what range of angles ? will the block in fact remain at rest? Your expression should be a function of ?? only.arrow_forward
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- In which of the following situations is there zero net external force on the object? (i) An airplane flying due north at a steady 120 m/s and at a constant altitude; (ii) a car driving straight up a hill with a 3 slope at a constant 90 km/h; (iii) a hawk circling at a constant 20 km/h at a constant height of 15 m above an open field; (iv) a box with slick, frictionless surfaces in the back of a truck as the truck accelerates forward on a level road at 5 m/s2.arrow_forwardA 10.0 kg mass rests on an incline that is 30 m long and 15 m high. The coefficient of friction between the mass and incline is 0.4. If the mass is allowed to slide down the incline, its acceleration will be?arrow_forwardSuppose you have a 120-kg wooden crate resting on a wood floor, with coefficient of static friction 0.500 between these wood surfaces. (a) What maximum force can you exert horizontally on the crate without moving it? (b) If you continue to exert this force once the crate starts to slip, what will its acceleration then be? The coefficient of sliding friction is known to be 0.300 for this situation.arrow_forward
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