Question

Sam lifts a 75 kg barbell by a vertical distance of 1. 3 metres. If his body is 20. 6fficient at this activity, how much metabolic energy must his body produce? choose the closest answer

Answer 1

The metabolic energy will be 197.03 J. From the given condition, the body is 20.6 % efficient.

What is work?

Work is defined as the product of applied force and the distance through which the body is displaced on which the force is applied.

From the law of conservation of energy, the energy is equal to the work done;

Potential Energy = Work done

Potential Energy = mgh

Potential Energy = (75 kg) ×(9.8 m/s²)×(1.3 m)

Potential Energy = 956.475 joule.

From the given condition, the body is 25 % efficient;

The metabolic energy is found as;

Metabolic energy = 20.6 % of E

Metabolic energy = 20.6 % of 956.475 J

Metabolic energy = 197.03 J

Hence,the metabolic energy will be 197.03 J

To learn more about the work, refer to the link ;

brainly.com/question/3902440

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