An athlete performs a Romanian deadlift with 197 kg bar from floor to hips (0.75 m) in 2.1 seconds.
1. How much mechanical work does the athlete perform? (Ignore the mass of athlete's body)
2. What acceleration does the athlete need to overcome to lift this weight?
3. How much mechanical power is generated from the athlete?
4. When the athlete has lifted the bar to the top of the lift, what is the potential energy of the bar?