nkambaarnold14 nkambaarnold14

20-06-2020
Physics

contestada

By using a machine an effort of ten newtons moved through a distance of 14metres to raise a load of 180N to height of 5metres. How many times has the machine made work easier?

By using a machine an effort of ten newtons moved through a distance of 14metres to raise a load of 180N to height of 5metres How many times has the machine mad class=

Respuesta :

facundo3141592 facundo3141592

26-06-2020

Answer: 6.4 times.

Explanation:

First, remember the definition of work as:

W = F*d

where W is work, F is force and d is distance.

The work applied when using the machine is:

W = 10N*14m = 140J

The work that you would apply if you did not use the machine is:

W' = 180N*5m = 900J.

The ratio W'/W is = 900J/140J = 6.4

This means that the machine has made 6.4 times the work easier. (you needed 6.4 times less work to do the task

Answer Link

Otras preguntas

I write down three consecutive even numbers. Six times the smallest plus two times the largest equals seven times the middle number. Find the three numbers.

Imagine a recessive mutation in rabbits that causes wiry fur (whereas the dominant, normal allele causes fluffy fur). If two heterozygous rabbits are mated, wha

Amount issued $400 million Offered Issued at a price of 101.50% plus accrued interest (proceeds to company 101.300%) through First Boston Corporation. Interest

Product differentiation that makes the product better for some consumers and worse for others is A) always welfare decreasing. B) vertical differentiation. C) h

why should we accept the democratic constitution

) If you started with 2.3182 g of 3-nitrophthalic acid and had a 93% yield of 3-nitrophthalhydrazide, how many grams of 3-nitrophthalhydrazide were recovered

help me and ill give brainlist!!!!!

Tamara likes to run on the treadmill. If she runs at a speed of 5.75 miles per hour for 0.92 hours, how many miles does she run? Recall distance = speed x time.

Draw the major product formed when the given epoxide reacts with aqueous acid. Use wedge and dash bonds, including hydrogen atoms at each stereogenic center, to

Which sentence is a correct statement of Newton's second law? An object in motion stays in motion, and an object at rest stays at rest unless acted upon by a ne