Solving for Work: 14,500J Applied to 1.2m Crowbar

In summary, if 14,500 J of work is applied to one end of a 1.2 m long crowbar, the work produced by the crowbar would be 14,500 J, assuming no work is done on the crowbar itself and friction is not a factor.
  • #1
NatalieWise123
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Homework Statement


You apply 14,500 J of work to one end of a crowbar. If the crowbar is 1.2 m long, how much work is produced by the crowbar? (friction is not a factor)

Homework Equations


Work=distance*force

The Attempt at a Solution


There's hardly any information in this question so the only thing I can think to do is multiply the two numbers. That would give you 1.74 x 104 J which would make the output greater than the input which isn't allowed, right?[/B]
 
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  • #2
NatalieWise123 said:
There's hardly any information in this question so the only thing I can think to do is multiply the two numbers. That would give you 1.74 x 104 J
No, that would give 1.74 x 104 J m, which are not proper units for work.
NatalieWise123 said:
which would make the output greater than the input which isn't allowed, right?
Conservation of energy is indeed a good place to start.
 
  • #3
DrClaude said:
No, that would give 1.74 x 104 J m, which are not proper units for work.
Conservation of energy is indeed a good place to start.

would the output just be equal to the input then?
 
  • #4
NatalieWise123 said:
would the output just be equal to the input then?
Yes, if you can neglect any work done on the crowbar itself.
 
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1. How is work calculated?

Work is calculated by multiplying the force applied to an object by the distance over which it is applied. The formula for work is W = F x d, where W is work, F is force, and d is distance.

2. What is the unit for work?

The standard unit for work is the Joule (J). This is equivalent to the unit of energy and is defined as the amount of work done when a force of 1 Newton is applied over a distance of 1 meter.

3. How do you calculate work with a crowbar?

To calculate work using a crowbar, you will need to know the force applied and the distance over which it is applied. In this case, we have a force of 14,500J and a distance of 1.2m, so work = 14,500J x 1.2m = 17,400J.

4. Why is work important in science?

Work is important in science because it is a measure of the energy required to move an object. It helps us understand the relationship between force, distance, and energy. Work is also a fundamental concept in fields such as physics, engineering, and mechanics.

5. What other factors can affect work?

Other factors that can affect work include the angle at which the force is applied and the direction of the force relative to the direction of motion. Friction and air resistance can also affect the amount of work required to move an object. Additionally, the weight and mass of the object being moved can impact the amount of work needed.

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