KileeU437418 KileeU437418
  • 25-10-2022
  • Physics
contestada

What is the efficiency of a block and tackle if you pull 20 m of rope with a force of 600 N to raise 200kg piano 5 m?

Relax

Respuesta :

BrantleeA127972 BrantleeA127972
  • 25-10-2022

W out = mass * distance * gravity

E in = Force * distance

Efficiency = W out / E in = (200 kg * 5m*9.8N) / (600N * 20m) = 0.81

0.81 x 100 = 81 %

Answer Link

Otras preguntas

why were Quakers considered progressives ? at least 5-7 sentences
can someone help me solve this ill mark u as brainlest
Do you think animal testing for cosmetics and household products should be banned?
simplify 6^2n+1x9^nx4^2n÷18^nx2^nx12^2n please help ..Thank you​
How do you write 1.2247 as a percentage?
What's 5000 x 90 (I don't have my calculator rn-)
II/ : Complete the sentence in the simple past tense. 1. It/ be/ cloudy/ yesterday. ……………… 2. In 1990/ we/ move/ to another city. ……………………In 1990, we were moved
number 39 show work pls tysm
In Galatians, Paul’s conclusion was that "we are not children of the slave but of the free." He makes this conclusion through allegorically explaining the stori
After writing a $400 check to pay a bill, a student had a balance of $550 in his account. How much did he have in the account before he wrote the check? a) Let