Chapter 4.1, Problem 1PP

To determine

To calculate: the work done in moving the couch.

Answer to Problem 1PP

  $\underset{\_}{400\text{ J}}$ work is done in moving the couch.

Explanation of Solution

Given data:

Applied horizontal force, $F=80\text{ N}$

Distance moved, $d=5\text{ m}$

Formula used:

Work Equation:

  $W=Fd$

Where $W$ is work in joules, $F$ is the applied force in newton and $d$ is the distance moved by the object in meters

Calculation:

As per the problem,

  $\begin{array}{l}F=80\text{ N}\\ d=5\text{ m}\end{array}$

Substitute the values of force and distance in the work equation:

  $\begin{array}{l}W=Fd\\ W=(80\text{ N)(5 m)}\\ W=400\text{ J}\end{array}$

Conclusion:

  $\underset{\_}{400\text{ J}}$ work is done in moving the couch.