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2. A heavy gym barbell has a mass of 40 kg. How much force does a weightlifter apply to
the barbell as they lift it upwards with an acceleration of 5 m/s2? Assume g = 10 m/s²
a. For full credit, draw a free-body diagram and label the forces.
b. Write given values, equations, and clearly indicate your solution to the question.
Sagot :
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