What is the weight of the counterweight in relation to the elevator car?

The weight of the counterweight in relation to the elevator car is typically designed to be approximately 40% of the car capacity. This ratio is important for ensuring efficient operation, as it helps to balance the weight of the elevator car and reduces the amount of energy required to move the car up and down. The counterweight allows the motor to work more efficiently, since it counteracts a significant portion of the load of the elevator car, aiding in smoother starts and stops. A counterweight that is exactly 40% of the car's capacity achieves a balance that is conducive to the efficient performance of the elevator system.

Other options present different ratios, which do not align with standard engineering practices in elevator design, either resulting in less efficiency or potentially compromising safety and operational integrity.