The first one is Hindiusim.
Answer:
A sheave keeps an elevator from moving side to side and further details in discussed below in detail.
Explanation:
A sheave is a lifter with a grooved edge surface, at the head of the elevator shaft. ... The cords that uplift the car are also joined to a counterweight, which stretches down on the other front of the sheave [and typically estimates about the mass of the car itself plus 42–50 percent of the complete weight it can sustain.
A mixture is a sample of matter that has more than one set of properties. A mixture has a combination of two or more types of matter and it can be separated. Hope this helped!