KileysMom7372 KileysMom7372
  • 01-11-2018
  • Physics
contestada

A person does 50j of work to lift a crate using a pulley. The plley's work output is 42j. What is the pulleys mechanical efficiency?

Respuesta :

kamizam38
kamizam38 kamizam38
  • 01-11-2018
(42/50)*100=84%

Because efficiency =(Useful/total)*100

Hope this helps!
Answer Link

Otras preguntas

Many argue that GPS technology is harmful because it: A. is expensive and difficult to navigate. B. violates people's privacy and personal space. C. shows us pl
Which of the following is NOT evidence that species evolved from a common ancestor?
Why did settlers in the colony need governments
how many meters can a sprinter run in 3 mins at 600 m/min ?
Sound travels about 340 m/s. The function d(t)=340t gives the distance​ d(t), in meters​, that sound travels in t seconds. How far does sound travel in 53 ​s?
MAX is equiangular If m
hello there! could you please help me? :) i have: music, study hall, social studies, art, english, spanish (duh), science, physical education (pe), technology,
solve for a 15=3(a+7)
What is the relationship between the soil’s permeability and the amount of groundwater?
standard form for y=mx+b​