Bundle: Physics for Scientists and Engineers with Modern Physics, Loose-leaf Version, 9th + WebAssign Printed Access Card, Multi-Term
9th Edition
ISBN: 9781305932302
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Chapter 7, Problem 10OQ
(i)
To determine
Force on the spring by the block.
(ii)
To determine
Force exerted by the spring on the wall.
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A7. Consider a spring-mass system as shown in the diagram, which consists of 1.0 kg block
held by three identical springs with force constant k = 100 Nm', as shown in Fig. A7.
Fig. A7
(a) Consider the block being displaced by a distance x m to the left. Determine the net
force (both magnitude and direction) acting on the block by the springs.
(b) The block is then released from rest. Show that the block performs simple harmonic
motion, and determine the frequency of oscillation.
no handwriiten answers accepted...
A toy gun uses a spring with a force constant of 295 N/m to propel a 11-g steel ball. Assuming the spring is compressed 7.4 cm and friction is negligible, answer the following questions:
What is the magnitude of the force, in Newton, that is needed to compress the spring?
What is the maximum height, in meters, to which the ball can be shot?
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Chapter 7 Solutions
Bundle: Physics for Scientists and Engineers with Modern Physics, Loose-leaf Version, 9th + WebAssign Printed Access Card, Multi-Term
Ch. 7.2 - Prob. 7.1QQCh. 7.2 - shows four situations in which a force is applied...Ch. 7.3 - Which of the following statements is true about...Ch. 7.4 - A dart is inserted into a spring-loaded dart gun...Ch. 7.5 - A dart is inserted into a spring-loaded dart gun...Ch. 7.6 - Choose the correct answer. The gravitational...Ch. 7.6 - A ball is connected to a light spring suspended...Ch. 7.8 - What does the slope of a graph of U(x) versus x...Ch. 7 - Prob. 1OQCh. 7 - If the net work done by external forces on a...
Ch. 7 - Prob. 3OQCh. 7 - A cart is set rolling across a level table, at the...Ch. 7 - Let N represent the direction horizontally north,...Ch. 7 - Prob. 6OQCh. 7 - Prob. 7OQCh. 7 - As a simple pendulum swings back and forth, the...Ch. 7 - Bullet 2 has twice the mass of bullet 1. Both are...Ch. 7 - Prob. 10OQCh. 7 - If the speed of a particle is doubled, what...Ch. 7 - Prob. 12OQCh. 7 - Prob. 13OQCh. 7 - A certain spring that obeys Hookes law is...Ch. 7 - A cart is set rolling across a level table, at the...Ch. 7 - Prob. 16OQCh. 7 - Can a normal force do work? If not, why not? If...Ch. 7 - Object 1 pushes on object 2 as the objects move...Ch. 7 - Prob. 3CQCh. 7 - (a) For what values of the angle u between two...Ch. 7 - Prob. 5CQCh. 7 - Discuss the work done by a pitcher throwing a...Ch. 7 - Prob. 7CQCh. 7 - Prob. 8CQCh. 7 - Prob. 9CQCh. 7 - Prob. 10CQCh. 7 - Prob. 11CQCh. 7 - Prob. 12CQCh. 7 - Prob. 13CQCh. 7 - Cite two examples in which a force is exerted on...Ch. 7 - A shopper in a supermarket pushes a cart with a...Ch. 7 - Prob. 2PCh. 7 - In 1990, Walter Arfeuille of Belgium lifted a...Ch. 7 - The record number of boat lifts, including the...Ch. 7 - A block of mass m = 2.50 kg is pushed a distance d...Ch. 7 - Spiderman, whose mass is 80.0 kg, is dangling on...Ch. 7 - Prob. 7PCh. 7 - Vector A has a magnitude of 5.00 units, and vector...Ch. 7 - Prob. 9PCh. 7 - Find the scalar product of the vectors in Figure...Ch. 7 - Prob. 11PCh. 7 - Using the definition of the scalar product, find...Ch. 7 - Prob. 13PCh. 7 - Prob. 14PCh. 7 - A particle is subject to a force Fx that varies...Ch. 7 - In a control system, an accelerometer consists of...Ch. 7 - When a 4.00-kg object is hung vertically on a...Ch. 7 - Prob. 18PCh. 7 - Prob. 19PCh. 7 - Prob. 20PCh. 7 - Prob. 21PCh. 7 - Prob. 22PCh. 7 - Prob. 23PCh. 7 - Prob. 24PCh. 7 - A small particle of mass m is pulled to the top of...Ch. 7 - The force acting on a particle is Fx = (8x 16),...Ch. 7 - When different loads hang on a spring, the spring...Ch. 7 - Prob. 28PCh. 7 - Prob. 29PCh. 7 - Review. The graph in Figure P7.20 specifies a...Ch. 7 - Prob. 31PCh. 7 - Prob. 32PCh. 7 - A 0.600-kg particle has a speed of 2.00 m/s at...Ch. 7 - A 4.00-kg particle is subject to a net force that...Ch. 7 - A 2 100-kg pile driver is used to drive a steel...Ch. 7 - Review. In an electron microscope, there is an...Ch. 7 - Review. You can think of the workkinetic energy...Ch. 7 - Prob. 38PCh. 7 - Review. A 5.75-kg object passes through the origin...Ch. 7 - A 1 000-kg roller coaster car is initially at the...Ch. 7 - A 0.20-kg stone is held 1.3 m above the top edge...Ch. 7 - Prob. 42PCh. 7 - A 4.00-kg particle moves from the origin to...Ch. 7 - Prob. 44PCh. 7 - A force acting on a particle moving in the xy...Ch. 7 - Prob. 46PCh. 7 - Prob. 47PCh. 7 - Prob. 48PCh. 7 - Prob. 49PCh. 7 - Prob. 50PCh. 7 - Prob. 51PCh. 7 - For the potential energy curve shown in Figure...Ch. 7 - A right circular cone can theoretically be...Ch. 7 - The potential energy function for a system of...Ch. 7 - Prob. 55APCh. 7 - A particle moves along the xaxis from x = 12.8 m...Ch. 7 - Prob. 57APCh. 7 - Prob. 58APCh. 7 - Prob. 59APCh. 7 - Why is the following situation impossible? In a...Ch. 7 - Prob. 61APCh. 7 - Prob. 62APCh. 7 - An inclined plane of angle = 20.0 has a spring of...Ch. 7 - Prob. 64APCh. 7 - Prob. 65APCh. 7 - A particle of mass m = 1.18 kg is attached between...Ch. 7 - Prob. 67CP
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- can you help with stepsarrow_forwarda)A 48 g ice cube can slide without friction up and down a 30∘ slope. The ice cube is pressed against a spring at the bottom of the slope, compressing the spring 10 cm. The spring constant is 23 N/m.When the ice cube is released, what total distance will it travel up the slope before reversing direction? Express your answer with the appropriate units. b)The ice cube is replaced by a 48 g plastic cube whose coefficient of kinetic friction is 0.20. How far will the plastic cube travel up the slope? Express your answer with the appropriate units.arrow_forwardThe ball launcher in a pinball machine has a spring that has a force constant of 50.0 N/m. The surface on which the ball moves is inclined 10.0° with respect to the horizontal. The spring is initially compressed 5.00 cm. Find the distance along the incline that the ball will go to (from the mean position of the spring), if the friction force = 0.1N. Mass of the ball = 20 gram.arrow_forward
- The force F~ acting on the ball in the above figure is a constant. When the ball is released fromrest, it swings upward until it is in equilibrium at height H from its initial release point. Ifm = 300 g, L = 80.0 cm, and F = 10 N, determine H.arrow_forwardA 0.1 kg ball is launched from a vertical cannon, 0.7 m high and 0.05 m wide. The cannon exerts a 146 N force on the ball for a period of 0.03 s. What is the final height ofthe ball?arrow_forwardTwo constant forces act on a 5.00-kg object moving in the xy-plane, as shown in the figure below, Force F, is 25.0 N at 0 = 37.0° from x-axis, while F = 40.0 N at o = 37.0º from y-axis. At time t = 0, the object is at the origin and has velocity v, (4.0i + 2.5j) m/s. Using the unit-vector notation (a) Find the total force on the object and its acceleration, (b) What is the object's velocity at the instant t = 3.00 s?, (e) What is its location at time t = 3.0 s?, (f) What is its kinetic energy at this moment?, and (g) How much work is done by the total force in this time? y F2 F1 marrow_forward
- A 83.57 kg person jumps on the ground from a height of 1.95 m. If he lands stiffly (with his knee joints compressing by 0.500 cm). Calculate the force on the knee joint.arrow_forwardSituation 2: The object is dropped onto a spring. A 2.50-kg object is held 185 cm above a relaxed massless vertical spring with a force constant of 520 N/m. 13. How far does it compress the spring? 14. How far does it compress the spring if the same experiment is performed on the Moon, where g=1.63 m/s2? 15. Repeat part (a), but now assume that a constant air-resistance force of 2.650 N acts on the object during its motion. Work and Energyarrow_forwardA 4.50 ✕ 105 kg subway train is brought to a stop from a speed of 0.500 m/s in 0.900 m by a large spring bumper at the end of its track. What is the force constant k of the spring (in N/m)?arrow_forward
- Physics students do an expriment to determine the coefficient of kinetic friction between a wooden object and the horizontal table it is on. This object has a mass of 1.6 kg. The students push it against a spring, which compresses the spring by 18cm. When released, the spring sends the object moving across the table and it stops 82 cm from where it was released. The spring constant is 200 N/m. Find the obeject-table coefficient of kinetic friction.arrow_forwardA 3.0 kg block falling from a height of 7.0 m landed on a vertical spring whose force constant is 2 500 n/m. By how much is the spring compressed?arrow_forward45. Review. Two constant forces act on an object of mass m = QC 5.00 kg moving in the xy plane as shown in Figure P7.45. Force F, is 25.0 N at 35.0°, and force F, is 42.0 N at 150°. At time t = 0, the object is at the origin and has velocity (4.00i2.50j m/s. (a) Express the two forces in unit-vector other answers notation. Use unit-vector notation for your (b) Find the total force exerted on the object. (c) Find the object's acceleration. Now, considering the instant t = 3.00 s find (d) velocity, (e) its position (f) its kinetic energy from m and (g) its the object's kinetic from 1500 energy m .T. (h) What conclusion can you 35.00 draw x m by comparing the answers to parts (f) and (g)? Figure P7.45arrow_forward
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