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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Students have asked these similar questions
1) In Figure, a block with mass m = 1 kg is released from height h,
friction until it reaches the path with first length d,= 2 m, where the friction force between B and
C is f = 8 N, and until it reaches the path, where the friction force between E and F is f, = 6 N
The height is h, = 1 m, and second horizontal length is d, = 1 m. The block continues its motior
after the point F.
(a) Find the velocity at the point A.
(b) Find the velocity at the point D.
(c) Find the height h if the velocity of m is vp= 8 m/s at the point F.(sin60=0.86 g=9.8 m/s²)
12 m. Its path is withour
m
d,=1 m
h, = 12 m
D
60°
%3D
E
d;=2 m
h,=1 m
А В
(a) Salim who participates in motor race, leaves the end of a ramp with a speed of 90km/hr
as in Figure. If his speed is 85.0 km/r when he reaches the
90 km/h
peak of the path, what is the maximum height that he
| reaches? Ignore friction and air resistance.
(b) A body of mass 6 kg is acted upon by a force of 5 N is moving along a rough floor at a constant speed of 3.5 m/s.
Calculate the power consumed in 15 s, and the force of friction acting on the object
(a) To find the depth of a water well at home, Martha and Amira drop a heavy rock into the well. After 3s, the rock is
4.
dropped, they hear a splash caused by the impact of the rock on the water. What is the height of the well? (Speed
of sound in air is 340 m/s).
(b) Professor Walter Lewin, for his famous
Physics experimental demonstration,
hanged a bowling ball from the ceiling by a
rope. He then pulls the ball away from its
equilibrium position and holds it adjacent to
his nose, as shown.
He releases the ball so that it swings…
(a) Salim who participates in motor race, leaves the end of a ramp with a speed of 90km/hr as in Figure. If his
speed is 85.0 km/r when he reaches the peak of the path,
85 km/h
what is the maximum height that he reaches? Ignore
friction and air resistance.
90 km/h
(b) A body of mass 6 kg is acted upon by a force of 5N is moving along a rough floor at a constant speed of
3.5 m/s. Calculate the power consumed in 15 s, and the force of friction acting on the object.
Chapter 8 Solutions
Pearson eText -- Physics for Scientists and Engineers with Modern Physics -- Instant Access (Pearson+)
Ch. 8.2 - By how much does the potential energy change when...Ch. 8.4 - In Example 83, what is the rock's speed just...Ch. 8.4 - Two balls are released from the same height above...Ch. 8 - List some everyday forces that are not...Ch. 8 - You lift a heavy book from a table to a high...Ch. 8 - Analyze the motion of a simple swinging pendulum...Ch. 8 - Prob. 4QCh. 8 - A coil spring of mass m rests upright on a table....Ch. 8 - Experienced hikers prefer to step over a fallen...Ch. 8 - (a) Where does the kinetic energy come from when a...
Ch. 8 - Can the total mechanical energy E=K+Uever be...Ch. 8 - Describe the energy transformations when a child...Ch. 8 - Prob. 10QCh. 8 - Recall from Chapter 4, Example 414, that you can...Ch. 8 - Two identical arrows, one with twice the speed of...Ch. 8 - In Mg. 825, water balloons are tossed from the...Ch. 8 - Suppose that you wish to launch a rocket from the...Ch. 8 - Suppose you lift a suitcase from the floor to a...Ch. 8 - Repeat Question 23 for the power needed instead of...Ch. 8 - Why is it easier to climb a mountain via a zigzag...Ch. 8 - Prob. 18QCh. 8 - Prob. 19QCh. 8 - (a) Describe in detail the velocity changes of a...Ch. 8 - Prob. 1MCQCh. 8 - Prob. 2MCQCh. 8 - Prob. 3MCQCh. 8 - Prob. 4MCQCh. 8 - Prob. 5MCQCh. 8 - Prob. 6MCQCh. 8 - Prob. 7MCQCh. 8 - Prob. 8MCQCh. 8 - Prob. 9MCQCh. 8 - Prob. 10MCQCh. 8 - Prob. 11MCQCh. 8 - Prob. 12MCQCh. 8 - Prob. 13MCQCh. 8 - Prob. 1PCh. 8 - Prob. 2PCh. 8 - Prob. 3PCh. 8 - Prob. 4PCh. 8 - Prob. 5PCh. 8 - Prob. 6PCh. 8 - (II) A particle is constrained to move in one...Ch. 8 - (II) If U=3x2+2xy+4y2z, what is the force, F?Ch. 8 - Prob. 9PCh. 8 - Prob. 10PCh. 8 - Prob. 11PCh. 8 - (I) Jane, looking for Tarzan, is running at top...Ch. 8 - Prob. 13PCh. 8 - Prob. 14PCh. 8 - Prob. 15PCh. 8 - Prob. 16PCh. 8 - Prob. 17PCh. 8 - Prob. 18PCh. 8 - Prob. 19PCh. 8 - (II) A roller-coaster car shown in Fig. 832 is...Ch. 8 - (II) When a mass m sits at rest on a spring, the...Ch. 8 - Prob. 22PCh. 8 - Prob. 23PCh. 8 - Prob. 24PCh. 8 - Prob. 25PCh. 8 - (III) A skier of mass m starts from rest at the...Ch. 8 - Prob. 27PCh. 8 - Prob. 28PCh. 8 - (II) A ski starts from rest and slides down a 28...Ch. 8 - Prob. 30PCh. 8 - Prob. 31PCh. 8 - Prob. 32PCh. 8 - Prob. 33PCh. 8 - Prob. 34PCh. 8 - Prob. 35PCh. 8 - Prob. 36PCh. 8 - Prob. 37PCh. 8 - (III) A spring (k = 75 N/m) has an equilibrium...Ch. 8 - Prob. 39PCh. 8 - Prob. 40PCh. 8 - Prob. 41PCh. 8 - (I) For a satellite of mass mS in a circular orbit...Ch. 8 - (II) Show that Eq. 816 for gravitational potential...Ch. 8 - (II) Determine the escape velocity from the Sun...Ch. 8 - Prob. 45PCh. 8 - Prob. 46PCh. 8 - (II) Take into account the Earths rotational speed...Ch. 8 - (II) (a) Determine a formula for the maximum...Ch. 8 - Prob. 49PCh. 8 - Prob. 50PCh. 8 - (II) How much work would be required to move a...Ch. 8 - (II) A sphere of radius r1 has a concentric...Ch. 8 - (II) (a) Show that the total mechanical energy of...Ch. 8 - Prob. 54PCh. 8 - Prob. 55PCh. 8 - Prob. 56PCh. 8 - (I) An 85-kg football player traveling 5.0 m/s is...Ch. 8 - (I) If a car generates 18 hp when traveling at a...Ch. 8 - Prob. 59PCh. 8 - Prob. 60PCh. 8 - Prob. 61PCh. 8 - Prob. 62PCh. 8 - Prob. 63PCh. 8 - Prob. 64PCh. 8 - Prob. 65PCh. 8 - Prob. 66PCh. 8 - Prob. 67PCh. 8 - Prob. 68PCh. 8 - Prob. 69PCh. 8 - (III) A bicyclist coasts clown a 6.0 hill at a...Ch. 8 - Draw a potential energy diagram, U vs. x, and...Ch. 8 - Prob. 72PCh. 8 - Prob. 73PCh. 8 - (III) The potential energy of the two atoms in a...Ch. 8 - (III) The binding energy of a two-particle system...Ch. 8 - Prob. 78GPCh. 8 - Prob. 79GPCh. 8 - Prob. 80GPCh. 8 - Prob. 81GPCh. 8 - A ball is attached to a horizontal cord of length ...Ch. 8 - Show the h must be greater than 0.60 if the ball...Ch. 8 - Prob. 84GPCh. 8 - Prob. 85GPCh. 8 - Prob. 86GPCh. 8 - Prob. 87GPCh. 8 - Prob. 88GPCh. 8 - The small mass m sliding without friction along...Ch. 8 - Some electric power companies use water to store...Ch. 8 - A film of Jesse Owenss famous long jump (Fig. 849)...Ch. 8 - The nuclear force between two neutrons in a...Ch. 8 - Prob. 93GPCh. 8 - A fire hose for use in urban areas must be able to...Ch. 8 - Prob. 95GPCh. 8 - (II) (a) Suppose we have three masses, m1, m2, and...Ch. 8 - Prob. 97GPCh. 8 - Prob. 98GPCh. 8 - Prob. 99GPCh. 8 - Suppose the gravitational potential energy of an...Ch. 8 - A particle of mass m moves under the influence of...Ch. 8 - Prob. 102GPCh. 8 - Prob. 103GPCh. 8 - Prob. 104GP
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Similar questions
- A 40 kg box has an initial velocity of 6 m/s down a 30-degree inclined plane at an initial height of 4 meters. The coefficient of friction between the box and the ground is 0.4. [a] Calculate the box’s velocity when it reaches the bottom of the inclined plane.arrow_forwardQI) ( A block of mass m-10 kg is on a frictionless horizontal surface and pushed against the spring, whose spring constant k-240 N/m, compressing the spring by 3m. The block is then released from rest. The block is observed to move up the incline and come back down, hitting and 771 compressing the spring by a maximum distance of Im. The inclined plane has www. friction and makes an angle of 9 = 37° with the horizontal. a) Find the work done by friction from the moment the block is released till the moment it strikes the spring again. b) What is the maximum height the block can reach? c) Find the kinetic friction coefficient between the block and the inclined plane.arrow_forwardSpring scales are often used in markets for weighing produce and simply consist of a spring connection to a gauge that displays how far the spring has stretched and correlates that to the weight of the produce. (a) What is the spring constant (k) for the spring in the scale if the spring stretches .96 cm for .5 kg of potatoes? Number N/m (b) What is the mass of a collection of potatoes if the spring stretches 2.8 cm? Number kg (c) How many cm apart are the quarter-kilogram marks on the scale? (Note: depending on your random values, this may be a much larger distance then you would expect) Number cmarrow_forward
- A mass of 2.1 kg is dropped from a height of 4.4 meters above a vertical spring anchored at its lower end to the floor. If the spring constant is 22N/cm, calculate how far (in cm) the spring is compressed.arrow_forwardA mass of 2.1 kg is dropped from a height of 4.4 meters above a vertical spring anchored at its lower end to the floor. If the spring constant is 22 N/cm, calculate how far (in cm), the spring is compressed.arrow_forward41. (II) Chris jumps off a bridge with a bungee cord (a heavy stretchable cord) tied around his ankle, Fig. 6–42. He falls for 15 m before the bungee cord begins to stretch. Chris's mass is 75 kg and we assume the cord obeys Hooke's law, F = -kx, with k = 55 N/m. If we neglect air resistance, estimate what distance d below the bridge Chris's foot will be before coming to a stop. Ignore the mass of the cord (not realistic, however) and treat Chris as a particle. (b) (c) 15 m FIGURE 6-42 d Problem 41. (a) Bungee jumper about to jump. (b) Bungee cord at its unstretched length. (c) Maximum stretch Ay = ? y= 0 of cord.arrow_forward
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- A factory worker accidentally releases a 180 kg crate that was being held at rest at the top of a ramp that is 3.7 m long and inclined at 39 to the horizontal.The coefficient of kinetic friction between the crate and the ramp, and between the crate and the horizontal factory floor, is 0.28. (a) How fast is the crate moving as it reaches the bottom of the ramp? (b) How far will it subsequently slide across the floor? (Assume that the crate’s kinetic energy does not change as it moves from the ramp onto the floor.) (c) Do the answers to (a) and (b) increase, decrease, or remain the same if we halve the mass of the crate?arrow_forwardWhat average net force is needed to bring a 1500kg car to rest from a speed of 100km/h within a distance of 55m?.arrow_forward13–90. The 40-kg boy is sliding down the smooth spiral slide such that z = -2 m/s and his speed is 2 m/s. Determine the r, 0, z components of force the slide exerts on him at this instant. Neglect the size of the boy. r = 1.5 marrow_forward
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