Mechanical Advantage
Über den Vortrag
Der Vortrag „Mechanical Advantage“ von Jared Rovny, PhD ist Bestandteil des Kurses „Work“.
Quiz zum Vortrag
You use a lever to lift a heavy object. Which of the following is TRUE about the work and force you must apply, relative to not having used a lever? Assume perfect efficiency and no losses to heat.
- The work done is the same, but the force is less.
- The work done is less, but the force is more.
- The work done is more, but the force is less.
- The work done is less, but the applied force is more.
- The work done is less, and the applied force is less.
Two fixed pulleys are attached to a ceiling and are used to lift a 100 kg box. How much force do you need to apply to your rope to lift the box?
- 500 N
- 1000 N
- 100 N
- 50 N
- 250 N
A machine allows you to apply an effective force of 500 Newtons for an input force of only 25 Newtons. What is the mechanical advantage of this machine?
- 20
- 20 N
- 500
- 500 N
- 20%
What is the mechanical advantage of a frictionless slope which makes an angle of 60° with the ground? (sin (60°) = √3/2)
- 2/√3
- 3/2
- √3/2
- 2/√3 Newtons
- √3/2 Joules
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Dozent des Vortrages Mechanical Advantage
Jared Rovny, PhD
Dr. Jared Rovny has been a Lecturer at Yale University in Connecticut, USA since 2013.
He obtained his PhD in Physics from Yale University in 2019. He was awarded the D. Allan Bromley Graduate Fellowship in Physics in 2019 and the Princeton Quantum Institute Postdoctoral Fellow in 2020.
Currently, he works with Yale's Center for Teaching and Learning at Yale University.
Due to his achievements, he earned the Yale College Prize Teaching Fellowship for his work in PHYS 171 (University Physics for the Life Sciences).
Within Lecturio, Dr. Rovny teaches courses on Physics.
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