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?

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 did germany invade sudetenland

Fresh:stale::new: _____ old young alert clever

A man was murdered in his office. The suspects are gerry, julie, jason, nick and sophie. The number 6,4,9,10, 11 are written on calendar with blood. Who is the

What is the function of red blood cells

What did Horace Mann want to see established because he believed they were necessary in a democracy?

Which of the following best describes the word organizing in the sentence? The students have been organizing the school dance for the last month. A. Conjugat

write a sentence or two that shows cause and effect organization

if velocity decreases, mass increases or decreases?

When a story is told from the _____ point of view, the narrator has full knowledge of all the characters.

Which Greek geometer founded a philosophical society that devoted itself to the study of mathematics?