Trying to find the power to this ?. A weightlifter lifts a 1250-n barbell 2meters in 3seconds. How much power was used to lift the barbell? Do you have to find the work first??
1250*2/3 = __ Watts
8333.333
Yes, in order to find the power used to lift the barbell, we first need to calculate the work done. Work is defined as the force applied to an object multiplied by the distance over which the force is applied.
So, the work done in lifting the barbell can be calculated using the formula:
Work = Force × Distance
In this case, the force is the weight of the barbell (1250 N) and the distance is the height it was lifted (2 meters).
Work = 1250 N × 2 m
Now, let's calculate the work done:
Work = 2500 Joules
Now that we have the work done, we can proceed to calculate the power used. Power is defined as the rate at which work is done, or the amount of work done per unit of time.
Power = Work ÷ Time
In this case, the time taken to lift the barbell is given as 3 seconds.
Power = 2500 J ÷ 3 s
Let's calculate the power used:
Power = 833.33 Watts
Therefore, the power used to lift the barbell is approximately 833.33 Watts.
To find the power used to lift the barbell, you do not necessarily have to find the work done first. However, understanding the concept of work is helpful in determining the power.
To calculate the power used to lift the barbell, you can use the formula:
Power = Work / Time
To find the work done, you can use the formula:
Work = Force × Distance
Given:
Force (F) = 1250 N
Distance (d) = 2 meters
Time (t) = 3 seconds
First, let's calculate the work done:
Work = Force × Distance
Work = 1250 N × 2 m
Work = 2500 Joules (since work is measured in Joules)
Now, we can calculate the power:
Power = Work / Time
Power = 2500 J / 3 s
Power ≈ 833.33 watts
Therefore, the power used to lift the barbell is approximately 833.33 watts.