Modified Mastering Physics with Pearson eText -- Combo Access -- for Physics for Scientist and Engineers (18 week)
5th Edition
ISBN: 9780137504299
Author: Douglas C. Giancoli
Publisher: Pearson Education (US)
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A car maintains a constant speed v as it traverses the hill
and valley shown in Fig. 5–34. Both the hill and valley
have a radius of curvature R. At which point, A, B, or C,
is the normal force acting on the car (a) the largest,
(b) the smallest? Explain. (c) Where would the driver
feel heaviest and (d) lightest? Explain. (e) How fast can
the car go without losing contact with the road at A?
A
R
В
FIGURE 5–34 Question 10.
At what minimum speed
must a roller coaster be
traveling so that passen-
gers upside down at
the top of the circle
(Fig. 5–48) do not fall
out? Assume a radius of
curvature of 8.6 m.
FIGURE 5-48
Problem 73.
A car drives straight down toward the bottom of a valley and up the other side on a road whose bottom has a radius of curvature of 135 m. At the very bottom, the normal force on the driver is twice his weight.
- At what speed was the car traveling?
Chapter 5 Solutions
Modified Mastering Physics with Pearson eText -- Combo Access -- for Physics for Scientist and Engineers (18 week)
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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- (II) A car drives straight down toward the bottom of a valleyand up the other side on a road whose bottom has a radius ofcurvature of 115 m.At the very bottom, the normal force on thedriver is twice his weight. At what speed was the car traveling?arrow_forward(II) A jet pilot takes his aircraft in a vertical loop (Fig. 5–38). (a) If the jet is moving at a speed of 840 km/h at the lowest point of the loop, determine the minimum radius of the circle so that the centripetal acceleration at the lowest point does not exceed 6.0 g's. (b) Cal- culate the 78-kg pilot's effective weight (the force with which the seat pushes up on him) at the bottom of the circle, and (c) at FIGURE 5–38 the top of the circle (assume the same speed). Problem 12.arrow_forward(4). a) How fast should a 1,150 kg car move to make a circular turn of radius 48m on a flat concrete road, if the coefficient of friction between the tires and the road is 0.56? Purpose is to avoid skidding. (b) How fast should a 1,150 kg car move to make a circular turn of radius 56 m on a banked road elevated 9° with respect to the horizontal.arrow_forward
- (II) A 0.55-kg ball, attached to the end of a horizontalcord, is revolved in a circle of radius 1.3 m on a frictionlesshorizontal surface. If the cord will break when the tension init exceeds 75 N, what is the maximum speed the ball can have?arrow_forwardAt what minimum speed must a roller coaster be traveling so that passengers upside down at the top of a circle (Fig 5-45) do not fall out? Assume a radius of curvature of 7.6 m.arrow_forward(4). (a) A 1,050 kg car makes a circular turn of radius 15m on a flat concrete road, if the speed is v= 8m/s %3D to avoid skidding what should be the coefficient of static friction between the tires and the road ? (b) A bicycle moving on a banked road at a speed of v=10m/s makes a circular turn. The radius of the circle is estimated to be 42 m. What is the angle of elevation, to the nearest tenth place, of the road with respect to the horizontal?arrow_forward
- A 1000-kg car rounds a curve on flat road of radius 50 m at a speed of 50 k/h. Will thecar make the turn or will it skid, if (a) if the pavement is dry and the coefficient of frictionis 0.60; (b) if the pavement is icy and Us = 0.25?arrow_forwardA car is moving along a horizontal curve of radius 20 m, and coefficient of friction between the road and wheels of the car is 0.25. If acceleration due to gravity is 9.8 m/s², then its maximum speed is.arrow_forwardA given highway turn has a 110 km/h speed limit and a radius of curvature of 1.3 km 1)What banking angle (in degrees) will prevent cars from sliding off the road, assuming everyone travels at the speed limit and there is no friction present?arrow_forward
- 8. (a) What is the maximum speed at which the car can round a curve of 30-m radius on a level road is the coefficient of friction between the tires and road is 0.8? As an engineer, you designed that a curve is to banked so that the car may turn the curved road at a speed of 45 kph without depending on friction, what must be the banking angle?arrow_forwardIf you are experiencing a force of 500N against your seatbelt as you turn a corner(radius of the curve is 30m) in a car, how fast must you be traveling in your car if the mass of your body is 80kg?arrow_forwardFor a car traveling with speed 20 m/s around a curve of radius 10 m, determine the approximate angle at which a road should be banked so that no friction is required.arrow_forward
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