5 Written Questions
5 Matching Questions
- What is the gear ratio equation?
- What is the difference between a 1st and 3rd class lever?
- Is a Mechanical Advantage of 4:1 better or worse than an "advantage" of 1:1
- What is the difference between a 1st and 2nd class lever?
- In a 1st class pulley, if the fulcrum is closer to the resistance than the effort, what happens to MA?
- a Both the effort and resistance are on the same side, with the effort further from the fulcrum than the resistance. MA is always >1.
- b GR/1 = Nout/Nin = Dout/Din = τout/τin = ωin/ωout
- c Both the effort and resistance are on the same side, with the effort closer to the fulcrum than the resistance. MA is always <1.
- d It becomes greater than one
- e Four times better
5 Multiple Choice Questions
- De/Dr ("distance traveled by effort force/distance traveled bu resistance force")
- The point which resistance and effort are equal (often seen in a lever)
- Force / Weight
5 True/False Questions
What does it mean if a Mechanical Advantage is <1 → There is more effort force required to overcome the resistance
What is a Pulley? → A lever consisting of a wheel used to change direction and magnitude
How do you find Moment? → force × distance
What is Mechanical Advantage? → Ratio of the magnitude of resistance and effort forces
In a Wheel and Axle, how do you find De or Dr? → 2π (length)