A lift (elevator) has a passenger car that is held up by a cable passing over a light, frictionless pulley and attached to a balancing weight. As the passenger car moves upward, the balancing weight descends. The table lists some masses: Passenger car: $520\,\text{kg}$ Balancing weight: $640\,\text{kg}$ Passenger: $80\,\text{kg}$ When the car is carrying only one passenger and the pulley is free to rotate, what is the magnitude of the car’s acceleration?
- A$0.032\,\text{m s}^{-2}$
- B$0.32\,\text{m s}^{-2}$
- C$0.61\,\text{m s}^{-2}$
- D$0.65\,\text{m s}^{-2}$