Related Essays

  • Rube Goldberg Machine Analysis

    Straightforward and complex machines are utilized to make regular day to day existence simpler for the normal human. This incorporates espresso machines, tom...

  • What Are Biology Matching Terms

    Energy- the ability to cause change, measured in joules. Machine- device that makes doing work easier by increasing the force applied to an object, changin...

  • Burger Doodle Is A Fast Food Restaurant Case Study

    Problem Questions Problem 1. The Bureau of Labor Statistics collects input and output data from various countries for comparison purposes. Labor hours are...

  • Acc 553 Quiz 4

    (5 points) 3. Suppose the production function takes on the following form: Q = aK 5 2 + ln(L2) a) What is the marginal productivity of labor? (5 points) b) W...

  • Case Study: Direct Current (DC) Motors

    Efficiency = power output / power input 1.6 Rating of a DC motor DC Motors are rated in terms of the rated voltage, rated power, rated speed and rated load...

  • Wind Turbine Research Paper

    〖((10m)⁄s)〗^2/2 ((1kJ⁄kg)/((1000m^2)⁄s^2 )) = 0.050kJ⁄kg m ̇= ρvA= ρv (πD^2)/4= ρvπr^2 P=W ̇=E ̇_mechanical= m ̇e_mechanical= 1/2 ρv^3 πr^2 Figure 4: The...

  • Industrial Revolution Impact

    The steam engine, spinning jenny, and telegraph were examples of essential inventions which had a huge impact on modern products. James Hargreaves invented t...

  • Physics Lab Report Essay

    2.3 Work by a spring force and gravity Work by a spring force Consider a liner spring of spring constant k and undeformed length L. An external force F act...

  • My Rube Goldberg Project

    I used it for my levers and my pulley instead of using a real pulley and wood levers. The one last big change was that I took away the screw and replaced it...

  • Milk Trucks Case Study

    the mass to be transported • Kj and Lj- the round-trip times to the jth supplier Let S1 be the cost per small truck (407) per day, S2 cost per large truck (9...

  • Shuffle
    Toggle On
    Toggle Off
  • Alphabetize
    Toggle On
    Toggle Off
  • Front First
    Toggle On
    Toggle Off
  • Both Sides
    Toggle On
    Toggle Off
  • Read
    Toggle On
    Toggle Off
Reading...
Front

Card Range To Study

through

image

Play button

image

Play button

image

Progress

1/23

Click to flip

Use LEFT and RIGHT arrow keys to navigate between flashcards;

Use UP and DOWN arrow keys to flip the card;

H to show hint;

A reads text to speech;

23 Cards in this Set

  • Front
  • Back
True or False:
The unit for mechanical advantage is a joule.
False:
There are no units for mechanical advantage.
True or False:
An automobile is an example of a simple machine.
False:
An automobile is an example of a compound machine.
Machine
Any device that makes "work" easier.
inclined plane
A sloping surface used to raise objects.
Pulley
A grooved wheel that has a rope or chain running along the groove.
Simple Machine
Any device that accomplishes work with only one movement.
Lever
A rod or bar that pivots around a fixed point.
Efficiency
A measure of the amount of work input that is transformed to usable work output.
Effort Force
Force applied to a machine.
Compund Machine
A device composed of tow or more simple machines.
Fulcrum
The fixed point of a lever.
Resistance Force
Force applied by a machine.
Ideal Machine
A device in which work output is equal to work input.
Which class of lever?



Give an example
3rd class

fishing pole
Which class of lever?



Give an example.
2nd class

wheel barrow
Which class of lever?



Give an example.
1st class

seesaw
What is the formula for mechanical advantage?
Load (resistance) force

Effort force
What is the formula for W(input)?
Effot force X Effort Distance
What is the formula for Efficiency?
Work output
X 100%
Work input
What is the formula for W(output)?
Load force x load distance
A person exerts a force of 83 N on a crowbar to move a rock tha weights 200 N.
a. What type of simple machine is a crowbar?
b. Determine the MA of the crowbar.
a. lever

b. MA = 200N
83N
MA = 2.41
A person exerts a force of 65 N to push a box that weighs 300 N up an inclined plane. What is the MA of the inclinced plane?
MA = 300 N
65 N
MA = 4.61
A person uses a fixed pulley to haul a bale of hay that weighed 400 N, 10 M up into the loft of the barn.
a. What was the output work done by the pulley?
b. If the person exerted a force of 600 N to raise the bale, what was the efficiency of the pulley?
c. How much work was transferred to friction and heat?
a