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blakesmith0110
20.11.2020 •
Physics
What is the average power output pf a weight lifter who can lift 250 kg 2.0 m in 2.0 s
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Ответ:
The average power output of the weight lifter who can lift the given mass is 2450 Watts.
Given the data in the question;
Mass;Power is the amount of energy transferred per unit time. It is expressed as:
Where W is work done and t is elapsed time.
So, we find the work done
Work done = Force × Displacement
Since Force = Weight = m × g
Where g is acceleration due to gravity (
)
Hence
We substitute our value into the previous equation
Therefore, the average power output of the weight lifter who can lift the given mass is 2450 Watts.
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Ответ:
Power = 2.45Kw or 2450 Watts.
Explanation:
Given the following data;
Mass, m = 250kg
Height, h = 2m
Time, t = 2secs
We know that acceleration due to gravity, g is equal to 9.8m/s²
Power can be defined as the energy required to do work per unit time.
Mathematically, it is given by the formula;
But Energy = mgh
Substituting into the equation, we have
Power = 2450 Watts
To convert to kilowatt (Kw), we would divide by 1000
Power = 2450/1000
Power = 2.45Kw.
Therefore, the average power output of the weightlifter is 2.45 Kilowatts.
Ответ:
It's either the bird or the parrot answer