How to Calculate Work to Lift a 160 N Barbell

What information do you need to know in order to calculate how much work it takes to lift a 160 N barbell? The correct option is: b. How high the barbell is being lifted

Explanation:

The work done in lifting the 160 N barbell is equal to the potential energy gained by the barbell in the final elevated position. Therefore, in order to find the work done to lift the barbell, we can calculate the potential energy gained by the barbell when it is placed at a certain height.

The work done to lift the barbell is equal to the potential energy gained by the barbell when it is placed at a height. The potential energy of an object is calculated using the formula:

P.E. = m × g × h

Where:

m = mass of the object

g = acceleration due to gravity

h = height to which the barbell is lifted

By substituting the given weight of the barbell (160 N), we can determine the work done to lift the barbell.

Therefore, the information needed to calculate the work done in lifting a barbell includes the mass of the barbell and the height to which it is being lifted. Other factors such as the shape of the weights, the strength of the person doing the lifting, or the volume of the barbell do not directly impact the calculation of work done.

Understanding how to calculate work in lifting scenarios can provide insights into the energy transfer involved and the effort required for such tasks.

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