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$\bullet$ $\bullet$ A graph of the potential energy stored in a tendon as afunction of the square of the distance $x$ it has stretched fromits equilibrium position is shown in the accompanying fig-ure. (a) Does the tendon obey Hooke's law? Explain yourreasoning. (b) What is the force constant of the tendon?(c) How far must the tendon be stretched from its equilib-rium position to store 10.0 $\mathrm{J}$ of energy? (d) What force isnecessary to hold the tendon in place in part (c)? (e) Sketcha clear graph of the potential energy stored in the tendon asa function of $x .$

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a) The force exerted on the tendon is equal to the displacement from equilibrium. Yes, it obeys Hooke's law.b) 250 $\mathrm{N} / \mathrm{m}$c) 28.3 $\mathrm{cm}$d) 70.7 $\mathrm{N}$e) The graph of the potential energy stored as function of $X$ is

Physics 101 Mechanics

Chapter 7

Work and Energ

Physics Basics

Applying Newton's Laws

Kinetic Energy

Potential Energy

Energy Conservation

Rutgers, The State University of New Jersey

University of Washington

McMaster University

Lectures

03:47

In physics, the kinetic energy of an object is the energy which it possesses due to its motion. It is defined as the work needed to accelerate a body of a given mass from rest to its stated velocity. Having gained this energy during its acceleration, the body maintains this kinetic energy unless its speed changes. The same amount of work is done by the body in decelerating from its current speed to a state of rest. The kinetic energy of a rotating object is the sum of the kinetic energies of the object's parts.

04:05

In physics, a conservative force is a force that is path-independent, meaning that the total work done along any path in the field is the same. In other words, the work is independent of the path taken. The only force considered in classical physics to be conservative is gravitation.

01:32

Tendons are strong elastic…

03:10

BIO Tendons. Tendons are s…

04:45

05:31

02:37

Tendons. Tendons are stron…

01:53

04:07

02:32

A student attaches ase…

03:26

For small stretches, the A…

03:06

09:38

The figure shows a graph o…

03:05

A marble moves along the $…

01:28

Potential Energy Graph A c…

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