College. answer. answered. A machine has an efficiency of 80%. How much work must be done on the machine so to make it do 50,000 J of output work? 12,500 J. 40,000 J. 62,500 J. 90,000 J.

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A. 0.7 B. 0.9 C. 1.5 D. 2.5 E. … A machine is driven by a 50 kg mass falling at a rate of 10.0 m in 5s. It lifts n load of 250 kgf. Taking the force of gravity on 1 kg mass as 10 N. Calculate the power input to the machine. If the efficiency of the machine is 60%, find the height to which the load is raised in 5s. The most efficient electrical machine is the transformer. Transformers have efficiency above 95%. The autotransformer has an efficiency of close to 98%.

Options. A) 0.53. B) 0.83. C) 1.20. D) 1.50.

Physics. 1 Answers. Mr. Franklin uses a machine that has an efficiency of 80%. The machine applies a force of 800 N through a distance of 20 m. Mr. Franklin applies a force of 50 N on the machine.

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1 Answers. Mr. Franklin uses a machine that has an efficiency of 80%.
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A machine of efficiency 80% is used to lift a box. If the effort applied by the machine is twice the weight of the box. Calculate the velocity

2018-03-21 Physics. 1 Answers. Mr. Franklin uses a machine that has an efficiency of 80%. The machine applies a force of 800 N through a distance of 20 m.