decosta1928 decosta1928

03-05-2020
Physics

contestada

a block and tackle pulley system of 6 pulley uses 300N to overcome 1200N.find efficiency

Respuesta :

MathPhys MathPhys

03-05-2020

Answer:

66.7%

Explanation:

There are 6 pulleys, so the mechanical advantage is 6.

The theoretical force needed to overcome 1200 N is therefore:

1200 N / 6 = 200 N

The actual force is 300 N. So the efficiency is:

200 N / 300 N × 100% = 66.7%

Answer Link

Otras preguntas

How did developments in media technology affect the african american community in the 1920s?

Find the Geometric Mean of 8 and 50. Be sure to show your work!

Is Bacteria and Bcaterium is same..

You randomly draw cards from a standard deck and place them face up on the table. What is the probability that the first two cards will both be aces

Atom X has 50 nucleons and a binding energy of 4.2 10^11 J. Atom Z has 80 nucleons and a binding energy of 8.4 10^11 J. Which atom has the greater binding energ

5^12 ÷ 5^4 = _____ A) 5^3 B)5^8 C) 5^16

Which angle pairs are supplementary? Check all that apply.

When judgments and decisions are influenced by the way in which information is presented, this is called a?

The _____ stain is used to stain and differentiate mycobacterium and nocardia from other bacteria.

What is the value of h in the diagram below? If necessary, round your answer to the nearest tenth of a unit.