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Work By Variable Forces (Springs) Solutions Library

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32 solutions

Work By Variable Forces (Springs)

Q. Stretchable ropes are used to safely arrest the fall of rock climbers. Suppose one end of a rope with unstretched length l is anchored to a cliff a...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. Spiderman uses his spider webs to save a runaway train (see the figure). His web stretches a few city blocks before the 2.5×104 kg train comes to ...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A mass m is attached to a spring which is held stretched a distance exttip{x}{x} by a force F and then released. The spring compresses, pulling th...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. The net force exerted on a particle acts in the positive exttip{x}{x} direction. Its magnitude increases linearly from zero at x = 0, to 410 N at...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. If it requires 5.5 J of work to stretch a particular spring by 2.0 cm from its equilibrium length, how much more work will be required to stretch i...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. The force on a particle, acting along the x axis, varies as shown in the figure .Determine the work done by this force to move the particle along t...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A 17000-kg jet takes off from an aircraft carrier via a catapult. The gases thrust out from the jets engines exert a constant force of 180 kN on t...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A child applies a force F parallel to the x-axis to a 8.00-kg sled moving on the frozen surface of a small pond. As the child cont...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. The spring of a spring gun has force constant k = 400 N/m and negligible mass. The spring is compressed 6.00 cm and a ball with mass 0.03...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A child applies a force F parallel to the x -axis to a 10.0-kg sled moving on the frozen surface of a small pond. As the child controls the s...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. As part of your daily workout, you lie on your back and push with your feet against a platform attached to two stiff springs arranged side by side ...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. An air-track glider of mass 0.100 kg is attached to the end of a horizontal air track by a spring with force constant 20.0 N/m. Initially the sp...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A force F is applied to a 2.0-kg radio-controlled model car parallel to the x-axis as it moves along a straight track. The x-component of t...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A force is applied to a 3.5-kg radio-controlled model car parallel to the x-axis as it moves along a straight track. The x-component of the force...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. To stretch a spring 8.00 cm from its unstretched length, 16.0 J of work must be done.What is the force constant of this spring?What magnitude for...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. Three identical 8.50-kg masses are hung by three identical springs . Each spring has a force constant of 7.60 kN/m and was ...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. One end of a horizontal spring with force constant 130.0 N/m is attached to a vertical wall. A 5.00-kg block sitting on the floor is plac...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A spring has an unstretched length of 10 cm. It exerts a restoring force F when stretched to a length of 11 cm.(a) For what length of the spring is...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. The left end of a spring is attached to a wall. When Bob pulls on the right end with a 200 N force, he stretches the spring by 20 cm. The same s...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A 38-cm-long vertical spring has one end fixed on the floor. Placing a 2.2 kg physics textbook on the spring compresses it to a length of 29 cm. Wh...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A horizontal spring with spring constant 650 N/m is attached to a wall. An athlete presses against the free end of the spring, compressing ...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. Two identical horizontal springs are attached to opposite sides of a box that sits on a frictionless table. The outer ends of the springs are clamp...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. The figure is the force-versus-position graph for a particle moving along the x-axis. Determine the work done on the particle during each of th...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A 11-cm-long spring is attached to the ceiling. When a 2.1 kg mass is hung from it, the spring stretches to a length of 16 cm . You may w...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A 61 kg student is standing atop a spring in an elevator that is accelerating upward at 3.1 m/s2 . The spring constant is 2600 N/m . You m...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A 7.1 kg mass hanging from a spring scale is slowly lowered onto a vertical spring, as shown in the figure. You may want to review (Pages 219 - 2...

Solved • Oct 31, 2018

Work By Variable Forces (Springs)

Q. A 4.00-kg particle is subject to a net force that varies with position as shown in the figure. The particle starts from rest at x 5 0. What is its ...

Solved • Oct 19, 2018

Work By Variable Forces (Springs)

Q. An archer pulls her bowstring back 0.400 m by exerting a force that increases uniformly from zero to 230 N. (a) What is the equivalent spring const...

Solved • Oct 19, 2018

Work By Variable Forces (Springs)

Q. When a 4.00-kg object is hung vertically on a certain light spring that obeys Hooke’s law, the spring stretches 2.50 cm. If the 4.00-kg object is r...

Solved • Oct 19, 2018

Work By Variable Forces (Springs)

Q. A particle is subject to a force Fx that varies with position as shown in Figure P7.15. Find the work done by the force on the particle as it moves...

Solved • Oct 19, 2018

Work By Variable Forces (Springs)

Q. The force acting on a particle varies as shown in Figure P7.14. Find the work done by the force on the particle as it moves (a) from x = 0 to x = 8...

Solved • Oct 19, 2018

Work By Variable Forces (Springs)

Q. How much work is done by the following force over the 12 m displacement?

Solved • Feb 10, 2017