Simple Machines and Mechanical Advantage Quiz
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Questions and Answers

What is the formula for mechanical advantage (M.A)?

  • Input force / Output force
  • Load / effort
  • Output force - input force
  • Output force / input force (correct)

Which of the following statements about efficiency is correct?

  • Efficiency has units since it involves power.
  • Efficiency can never be expressed in terms of Mechanical Advantage (M.A).
  • Efficiency is always greater than 1.
  • Efficiency is a ratio of work output to work input. (correct)

In a First-Class Lever, where is the fulcrum located?

  • It varies depending on the specific lever
  • Between the load and the effort (correct)
  • Closest to the load
  • At one end of the lever

What does the term 'Velocity Ratio' describe?

<p>The ratio of distances moved by the load and the effort (C)</p> Signup and view all the answers

Which lever class has the load positioned between the effort and the fulcrum?

<p>Second-Class Lever (C)</p> Signup and view all the answers

In a wheelbarrow, which part acts as the fulcrum?

<p>The axle of the wheel (C)</p> Signup and view all the answers

What is the mechanical advantage (MA) of a third-class lever?

<p>MA is always less than 1 (B)</p> Signup and view all the answers

Which of the following is an example of a third-class lever?

<p>A fishing pole (B)</p> Signup and view all the answers

What is the formula for the mechanical advantage (MA) of an inclined plane?

<p>MA = $l/h$ (C)</p> Signup and view all the answers

What is the formula for the mechanical advantage (MA) of a screw?

<p>MA = $2\pi r/p$ (A)</p> Signup and view all the answers

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