7.A builder carrying 6 bricks climbs a ladder. The weight of each brick is 25 N and the builder climbs a vertical distance of 4 meters in 8 seconds. Calculate the power used to raise all the bricks.

The power used to raise all the bricks is 75 watts.

Explanation:

Given;

number of blocks = 6

weight of each block = 25 N

vertical distance climbed by the builder, d = 4m

time to climb the the vertical distance, t = 8 seconds

Weight of the 6 blocks, F = 6 x 25 N = 150 N

speed of the build, v = 4 / 8 = 0.5 m/s

The power used to raise all the bricks is calculated as;

P = Fv

P = (150)(0.5)

P = 75 watts.

Therefore, the power used to raise all the bricks is 75 watts.

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