NB: The diagram of the pulley system is not shown but the information provided is sufficient to answer the question
Answer:
Power = 2702.56 W
Explanation:
Let the power consumed be P
Energy expended = E = mgh
height, h = 5 m
E = 80 * 9.8 * 5
E = 3920 J
To calculate the time, t
From F = ma
F = 900 N
900 = 80 a
a = 900/80
a = 11.25 m/s²
From the equation of motion, 
The drill head starts from rest, u = 0 m/s
Power, P = E/t
P = 3920/0.0.943
P = 4157.79 W
But Efficiency, E = 0.65
P = 0.65 * 4157.79
Power = 2702.56 W
Can't you look it up or something? Idk what it is but I can try and look it up for ya! If you want
Answer:
62.1 kg
Explanation:
Weight = mass × acceleration
609 N = mass × (9.8)
The acceleration is 9.8 because that is the acceleration of gravity.
Divide both sides by 9.8 to isolate the mass.
609N/9.8 = mass
62.1 kg =mass
It is generally the brightest compared to the other stars in the constellation.
Answer:
Convert all the times to either hours or seconds
Explanation:
One time unit is in hours, and the other is in seconds. In order to do the math, the units need to be the same. So you either need to convert hours to seconds, or seconds to hours.
