Question

Compute the power at which a 250 g squirrel will climb up on a tree at a rate of 0.5 $m{s}^{-1}$ against the force of gravity? (given $g=10m{s}^{-2}$)

• A. $1250$ W
• B. $125$ W
• C. $12.5$ W
• D. $1.25$ W

Answer 1

The correct option is D $1.25$ W

$Power=m\times g\times v$, where $v$ is velocity.

Power$=\frac{250}{1000}\times 10\times 0.5$
$=\frac{1}{4}\times 10\times 0.5=1.25W$