Originally posted by Aaron
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Summing vectors has nothing to do with work - that is a common mistake by some honest people and is a popular intentionally false argument made misinformation agents.
Until you allow yourself to to accept the indisputable facts about regauging and its purpose of creating new potential differences from the energy dissipation, you will be the one in fact who is arguing apples and oranges.
Every university, high school, etc... site says the exact same thing. Force being mass x gravity of course.
Calculating Work
Work Equation
work = force x distance or W = F x d
Now let's look at the steps for calculating work.
» See also: Solving One Step Multiplication Equations Steps for Calculating Work
The next page will give you some sample problems with the answers.
Sample Work Problem #1
Until you allow yourself to to accept the indisputable facts about regauging and its purpose of creating new potential differences from the energy dissipation, you will be the one in fact who is arguing apples and oranges.
Every university, high school, etc... site says the exact same thing. Force being mass x gravity of course.
Calculating Work
Work Equation
The equation to solve work problems looks like this:
work = force x distance or W = F x d
- The SI unit for force is newton (N).
- The SI unit for distance is meter (m).
- The SI unit for work is joule (J).
Now let's look at the steps for calculating work.
If you need some review on calculating one step equations, click on the link below.
» See also: Solving One Step Multiplication Equations Steps for Calculating Work
We will continue to use the same procedure to solve work problems as we have when working other physics problems.
Remember to continue to work in a step by step manner by writing each step out.
Problem: A fork lift moves 34m carrying a 1023N box across the warehouse floor. How much work is done by the fork lift.
Step 1: Write down the equation needed to solve the problem.
W = F x d
Step 2: Insert all known measurements into the equation.
W =
(1023N)(34m)
Step 3: Solve. Carefully enter numbers into your calculator.
W = 34,782 J
The forklift does 34,782J of work.
- Make sure that all of your numbers have the correct SI unit label.
- Always recheck your answers.
The next page will give you some sample problems with the answers.
Sample Work Problem #1
Remember as you solve the following problems to keep following the steps shown on the previous page.
Problem #1:
How much work is done by a person who uses a force of 27.5N to move a grocery buggy 12.3m?
- Equation
W = F x d = (27.5N) (12.3m) = ?
- Answer
W = 338.25J
Did you get it correct? Try another one!
- Answer
please tell me which Force to use
a. The weight of the ball F=m*g?
b. The force to lift it F=-m*g
c. The resulting force?
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