6. Intro to Forces (Dynamics)
Newton's First & Second Laws
6. Intro to Forces (Dynamics) Newton's First & Second Laws
39PRACTICE PROBLEM
A weightlifter tries to stop a 2.5 x 102 kg rolling barbell moving at 43 km/h to keep it from hitting a fragile structure 5.0 x101 m away. What force must he exert on the barbell? Give it as a percentage of the weight of the barbell. What force would the barbell exert on the weightlifter as a result?
A weightlifter tries to stop a 2.5 x 102 kg rolling barbell moving at 43 km/h to keep it from hitting a fragile structure 5.0 x101 m away. What force must he exert on the barbell? Give it as a percentage of the weight of the barbell. What force would the barbell exert on the weightlifter as a result?