Physics Physics Practice Problems Solutions Library

# Work By Variable Forces (Springs) Solutions Library

Access 32 Work By Variable Forces (Springs) video and text solutions to help you complete your homework. Need to revisit the concept? Watch our Work By Variable Forces (Springs) learn videos.

### Browse Solutions

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