Question

1. Timmy with his backpack weighs 300 N.He walks climbs a set of stairs 30 mhigh and 100 m long. How much workdid he do?

Answer 1

First, let's calculate the distance moved, using the Pythagorean theorem:

$\begin{gathered} d^2=30^2+100^2\\ \\ d^2=900+10000\\ \\ d^2=10900\\ \\ d=104.4\text{ m} \end{gathered}$

Now, to calculate the work done, we can use the formula below:

$\begin{gathered} W=F\cdot d\\ \\ W=300\cdot104.4\\ \\ W=31320\text{ J} \end{gathered}$

Therefore the work done is 31,320 J.