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A machine has a velocity ratio of 6 and is 80% efficient. What effort would be needed to lift a load of 300N with the aid of this machine

(300 / 6) / 0.80 = 50 / 0.80 = 62.5 Newtons

Did you know?

Did you know that the velocity ratio of a machine refers to the ratio of the distance the effort moves to the distance the load moves? In this case, the machine has a velocity ratio of 6, which means that for every 1 unit of distance the effort moves, the load will move 6 units of distance. Additionally, efficiency is an important factor to consider when using a machine. It measures how well a machine can convert input energy into useful work output. In this scenario, the machine is 80% efficient, meaning that 80% of the input energy is effectively used to lift the load, while the remaining 20% is lost as waste. To determine the effort needed to lift a load of 300N with the aid of this machine, we would use the formula: Effort = Load / (Velocity ratio * Efficiency) Plugging in the values, we get: Effort = 300N / (6 * 0.8) Effort = 62.5N Therefore, an effort of 62.5N would be needed to lift the load of 300N with the aid of this machine.