Final answer:
The efficiency and mechanical advantage of a machine depend on factors such as friction force, elastic force, and surface area.
Step-by-step explanation:
The efficiency and mechanical advantage of a machine depend on various factors, including the friction force, elastic force, and surface area. These factors directly affect how efficiently the machine can perform its intended tasks.
For example, in a simple machine like a pulley system, the friction force between the pulley and the rope can reduce the overall efficiency. Increasing the surface area in contact with the rope can help reduce this friction force and improve the machine's efficiency.
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