Question

how much power is needed to lift a box with a force of 780 newtons over a distance of 2 meters in 45 seconds

Answer 1

34.67 W

Step-by-step explanation:

Power is the rate at which work is done and can be found by using the formula

`p = (w)/(t) \\`

p is the power in Watts (W)

w is the workdone in joules

t is time in s

but workdone = force × distance

From the question

force = 780 N

distance = 2 m

workdone = 780 × 2 = 1560 N

Since we now have the value of workdone we can find the power

We have

`p = (1560)/(45) = 34.6666666... \\`

We have the final answer as

34.67 W

Hope this helps you