Question

During the ascent phase of a rep of the bench press, the lifter exerts an average vertical force against a 5000-gram barbell while the barbell moves 0.8 m upward. How much work did the lifter do to the barbell? Express your answer in kilo Joules (kJ). Assuming the acceleration due to gravity (g) to 10 m/s^2 BENCH-PRESS a. 4 kJ b. 0.04 kJ c. 40 kJ d. 0.4 kJ

          During the ascent phase of a rep of the bench press, the lifter exerts an average vertical force against a 5000-gram barbell while the barbell moves 0.8 m upward. How much work did the lifter do to the barbell? Express your answer in kilo Joules (kJ). Assuming the acceleration due to gravity (g) to 10 m/s^2
BENCH-PRESS
a. 4 kJ
b. 0.04 kJ
c. 40 kJ
d. 0.4 kJ

During the ascent phase of a rep of the bench press, the lifter exerts an average vertical force against a 5000-gram barbell while the barbell moves 0.8 m upward. How much work did the lifter do to the barbell? Express your answer in kilo Joules (kJ). Assuming the acceleration due to gravity (g) to 10 m/s^2
BENCH-PRESS
a. 4 kJ
b. 0.04 kJ
c. 40 kJ
d. 0.4 kJ

Added by Derek B.

University Physics with Modern Physics

Hugh D. Young 14th Edition

Instant Answer

Solved by Expert Carson Merrill

04/21/2022

Step 1

Step 1: Calculate the change in potential energy using the formula: change in potential energy = mass * gravity * height change Show more…

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During the ascent phase of a rep of the bench press, the lifter exerts an average vertical force against a 5000-gram barbell while the barbell moves 0.8 m upward. How much work did the lifter do to the barbell? Express your answer in kilo Joules (kJ); assuming the acceleration due to gravity (g) is 10 m/s^2.