Answer:
<em> The power used by the crane = 2548 W</em>
Explanation:
<em>Power</em>: Power can be defined as the rate at which energy is dissipated or expended. The S.I of power is Watt (W). It can be express mathematically as,
Power (P) = Energy/time......................................... Equation 1
But, Energy = mgh..................................................... Equation 2
Where m = mass of the body, g = acceleration due to gravity, h = height.
<em>Given:m = 130 kg, h = 10 m</em>
<em>Constant: g = 9.8 m/s²</em>
<em>Substituting these values into equation 2</em>
<em>Energy = 130×10×9.8</em>
<em>Energy = 12740 J.</em>
<em>Also Given: t = 5 s</em>
<em>Substituting these values into equation 1</em>
<em>Power = 12740/5</em>
<em>Power = 2548 W</em>
<em>Therefore the power used by the crane = 2548 W</em>