Question

Your family is moving to a new apartment. While lifting a box 1.5 m straight up to put it on a truck, you exert an upward force of 300N for 1.0 s. How much power is

required to do this?
O 450 Watts
O 340 Watts
O 600 Watts
O235 Watts

Answer 1

Power required= 450 watts

solution:

Given,

Force(F)= 300N,

Time(t)= 1.0s,

Distance(d)= 1.5m,

Power(p)=?

Power(p)=work/time,

Work=Force*Distance=F*d

=300*1.5 =450J

Power(p)= 450/1.0

=450 Watts

Power required= 450 Watts

Answer 2

Power = Work / Time
= (300 x 1.5) / 1
= 450 Watt