Question

assuming that the brakes are lifted with constant speed what is the minimum power the motor must produce?

Answer 1

Given

Weight of the bricks, W=916N

Height,, h=13.2 m

Time taken, t=28.2s

To find

The power the motor must produce

Step-by-step explanation

The power is the ratio of work done per unit time

Thus

`\begin{gathered} P=(W* h)/(t) \\ \Rightarrow P=(916*13.2)/(28.2) \\ \Rightarrow P=428.76W \end{gathered}`

Conclusion

The power produced is 428.76W