This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What is the primary function of any lubricant? What will be an ideal ... (Read 89 times)

natalie2426

  • Hero Member
  • *****
  • Posts: 524
on: Aug 19, 2018
What is the primary function of any lubricant?
 
  What will be an ideal response?

Question 2

A 500 pound push cart is rolled up an inclined plane that is 20 feet long. The vertical distance the object is raised is 4 feet. Assuming no friction, how much effort will it take to push the cart up the incline?
 
  What will be an ideal response?

Question 3

Give an example of a First, Second, and Third class lever.
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

gabrielle_lawrence

  • Sr. Member
  • ****
  • Posts: 353
Reply #1 on: Aug 19, 2018
Answer to Question 1

The primary function of any lubricant is to prevent metal to metal contact of moving surfaces, whether they are sliding or rolling.

Answer to Question 2

Output work = Output force x Output distance
Output work = 500 lb x 4 ft
Output work = 2000 ft-lbs.

With no friction, Input work equals Output work, therefore:

Input force = Input work / Input distance
Input force = 2000 ft-lbs / 20 feet
Input force = 100 lbs force.

Answer to Question 3

Seesaw, wheelbarrow, and man's arm.


natalie2426

  • Member
  • Posts: 524
Reply 2 on: Aug 19, 2018
YES! Correct, THANKS for helping me on my review

scikid

  • Member
  • Posts: 300
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

Chronic necrotizing aspergillosis has a slowly progressive process that, unlike invasive aspergillosis, does not spread to other organ systems or the blood vessels. It most often affects middle-aged and elderly individuals, spreading to surrounding tissue in the lungs. The disease often does not respond to conventionally successful treatments, and requires individualized therapies in order to keep it from becoming life-threatening.

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Over time, chronic hepatitis B virus and hepatitis C virus infections can progress to advanced liver disease, liver failure, and hepatocellular carcinoma. Unlike other forms, more than 80% of hepatitis C infections become chronic and lead to liver disease. When combined with hepatitis B, hepatitis C now accounts for 75% percent of all cases of liver disease around the world. Liver failure caused by hepatitis C is now leading cause of liver transplants in the United States.

Did you know?

The liver is the only organ that has the ability to regenerate itself after certain types of damage. As much as 25% of the liver can be removed, and it will still regenerate back to its original shape and size. However, the liver cannot regenerate after severe damage caused by alcohol.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Went and Briggs demonstrated the relationship between light perception and auxin function. Went and Briggs demonstrated the relationship between light perception and auxin function.
Female reproductive structure and function in humans. Female reproductive structure and function in humans.
Injecting an IV push (bolus) medication; B, into a primary infusion line Injecting an IV push (bolus) medication; B, into a primary infusion line
Testing motor function of cranial nerve VII - Show teeth Testing motor function of cranial nerve VII - Show teeth
Function divisions of nervous system Function divisions of nervous system
For each function f(x) = 6x^2 - 4, estimate the instantaneous rate of change for the given ... For each function f(x) = 6x^2 - 4, estimate the instantaneous rate of change for the given ...
Video: Glycolysis Animation

For a complete list of videos, visit our video library