Weightlifter Lifting a Barbell Overhead: The Joy of Powerlifting

What are the two true statements regarding a weightlifter lifting a barbell overhead?

A. Potential energy of the barbell is highest when it is on the ground.

B. Kinetic energy of the barbell is highest when it is on the ground.

C. Work is done when the weightlifter drops the barbell.

D. Work is done when the weightlifter raises the barbell.

Final Answer:

The potential energy of the barbell is highest when it is on the ground, and work is done when the weightlifter raises the barbell.

Two statements that are true with regards to a weightlifter lifting a barbell overhead are:

The potential energy of an object is greatest when it is at its highest point. Therefore, when the barbell is on the ground, it has the highest potential energy.

Work is done when a force is applied to an object and it moves in the direction of the force. In this case, the weightlifter applies a force to lift the barbell, and it moves upward, so work is done.

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