In a "dead lift," a weight lifter grabs a 185-kg barbell and lifts it 0.550 m from the floor. I

step 1 Here in this question we have been asked to find how much work did the weight lifter do. So work

In a "dead lift," a weight lifter grabs a 185-kg barbell and...

In a "dead lift," a weight lifter grabs a $185-\mathrm{kg}$ barbell and lifts it $0.550 \mathrm{~m}$ from the floor. If the barbell started and ended at rest, how much work did the weight lifter do? (a) $997 \mathrm{~J} ;$ (b) $498 \mathrm{~J}$ (c) $249 \mathrm{~J} ;$ (d) $102 \mathrm{~J}$.

In a "dead lift," a weight lifter grabs a $185-\mathrm{kg}$ barbell and lifts it $0.550 \mathrm{~m}$ from the floor. If the barbell started and ended at rest, how much work did the weight lifter do?
(a) $997 \mathrm{~J} ;$
(b) $498 \mathrm{~J}$
(c) $249 \mathrm{~J} ;$
(d) $102 \mathrm{~J}$.

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Key Concepts

Force

Force is a fundamental concept in mechanics that describes any interaction capable of changing an object's state of motion. In lifting scenarios, the applied force must overcome the gravitational force acting on the object's mass, with the necessary counteracting force determined by the product of the mass and the gravitational acceleration.

Gravitational Potential Energy

Gravitational potential energy refers to the energy stored in an object due to its position in a gravitational field. When an object is lifted, work is done against the force of gravity, increasing its gravitational potential energy, which can be calculated using the product of the object's mass, gravitational acceleration, and the height it is raised.

Work

Work is defined as the transfer of energy that occurs when a force is applied to an object causing it to move. It is calculated as the product of the force component in the direction of the displacement and the displacement itself, emphasizing the energy transfer involved in moving objects.

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