Pearson eText -- Physics for Scientists and Engineers with Modern Physics -- Instant Access (Pearson+)
5th Edition
ISBN: 9780137488179
Author: Douglas Giancoli
Publisher: PEARSON+
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A curved road of radius 90 m is to be
banked to that a vehicle may move along the
curved road with a uniform speed of 75.6
km/hr without any tendency to slip off. What
must be the angle of banking ? (g = 9.8 m/s²).
#76
A.)A 38.0 kg child is riding a playground merry-go-round that is rotating at 55.0 rev/min. What centripetal force (in N) is exerted if he is 1.25 m from its center? (Enter the magnitude.)
B.)What centripetal force (in N) is exerted if the merry-go-round rotates at 4.5 rev/min and he is 8.00 m from its center? (Enter the magnitude.)
C.)
Compare each force with his weight. (Enter the ratios of the magnitudes.)
F(a)
w
=
F(b)
w
=
Chapter 5 Solutions
Pearson eText -- Physics for Scientists and Engineers with Modern Physics -- Instant Access (Pearson+)
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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Similar questions
- A door in a hospital has a pneumatic closer that pulls the door shut such that the doorknob moves with constant speed over most of its path. In this part of its motion, (a) does the doorknob experience a centripetal acceleration? (b) Does it experience a tangential acceleration?arrow_forwardJust Answer this question: (d) Where does the person "feel lightest"? Where does the person "feel heaviest"? (e) What value of v at the top is required so that the person "feels weightless"? (answer: 12.0 m/s)arrow_forward3arrow_forward
- (a) A 19.0 kg child is riding a playground merry-go-round that is rotating at 30.0 rev/min. What centripetal force (in N) must she exert to stay on if she is 1.50 m from its center? (b) What centripetal force (in N) does she need to stay on an amusement park merry-go-round that rotates at 3.00 rev/min if she is 6.00 m from its center? (c) Compare each force with her weight. force from (a)/weight= force from (b)/ weight=arrow_forwardA sample of blood is placed in a centrifuge of radius15.0 cm. The mass of a red blood cell is 3.0 x 10-16 kg, andthe magnitude of the force acting on it as it settles out of theplasma is 4.0 x 10-11 N. At how many revolutions per secondshould the centrifuge be operated?arrow_forwardA father and a daughter are riding a merry-go-round, which is turning at a constant rate. The father is near the outer edge, while the daughter is closer to the center. Who has the greater tangential acceleration? Who has greater centripetal acceleration? Who has greater total acceleration?arrow_forward
- Is it possible for a car to move in a circular path in such a way that it has a tangential acceleration but no centripetal acceleration?arrow_forward. A 5 Kg cat sits 2 m from the center of a merry go round. The merry go round is set in motion, and the cat's tangential speed is 3 m/s. (a) What is the cat centripetal acceleration? (b) What is the centripetal force acting on the cat?arrow_forward(a) A 36.0 kg child is riding a playground merry-go-round that is rotating at 55.0 rev/min. What centripetal force (in N) is exerted if he is 1.25 m from its center? (Enter the magnitude.) (b) What centripetal force (in N) is exerted if the merry-go-round rotates at 4.5 rev/min and he is 8.00 m from its center? (Enter the magnitude.) N (c) Compare each force with his weight. (Enter the ratios of the magnitudes.) F(a) = Fb)arrow_forward
- A train runs along an unbanked circular track of radius 30 m at a speed of 54 km/h. The mass of the train is 106 kg. What provides the centripetal force required for this purpose - The engine or the rails? What is the angle of banking required to prevent wearing out of the rail?arrow_forwardQuestion 2: a. (i) Give an everyday example of one-dimensional motion where the velocity is westward and theacceleration is eastward. (ii) Figure below showing a holding state of the book by applying forcesby both hands. The coefficient of static friction between his hands and the book is 0.40.Find thevalues of the forces. b. A student of 60 kg riding in a Ferris wheel of radius 20 meters. The tangential speed of the rotationis 2 m/s. Determine the force exerted by the seat on the child at the bottom of the ride. Express youranswer in terms of the weight of the mg.arrow_forwardCompare the magnitudes of centripetal and centrifugal forces.arrow_forward
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