Question

Determine the amount of power

Answer 1

Here is your answer mate,

Question,

$Determine\: the\: amount\\ \: of\: power\:used\: in\\\: holding\: a\: 25\: kg\: box\:\\ , \: 1.5\: meters \: above\: the\: floor\\\: for\: 60\: seconds$

Answer,

• Power is equal to work done per unit time

• Work is force × displacement

• SI UNIT OF WORK Newton meter

• SI UNIT OF POWER Watt

Solution,

Given,

$MASS \: IS\: 25\: KG\: \\ and \: HEIGHTIS\: 1.5m\:$

WORK DONE (done against gravity) =

mass×acceleration due to gravity ×height

WORK = 25× 10× 1.5

$\: \: \: \: \: \: \: \:\: \: \: \: \: \: \:$= 375 Nm

Now

POWER =

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:\frac{work}{time}$

POWER

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:= \frac{375}{60} Watt$

$\: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: =6.25$

$Therfore\: your \: answer\: is\: 6.25$

Check this,

$Acceleration\: due\: to \: gravity\\\: can\: be\: 9.8\: m/s²\: \\As\: nothing\: mentioned\\\: in\: question\: \\I \: took \: it \: as \: 10$

Have a good day