Exam (elaborations)
PLTW Simple Machines Questions with Correct Answers
- Course
- Institution
PLTW Simple Machines Questions with Correct Answers
[Show more]
Content preview
PLTW Simple Machines Questions with CorrectAnswers
What are simple machines? Correct Answer-Mechanisms that
manipulate magnitude of force and distance
What are the six simple machines? Correct Answer-Lever, wheel and
axle, pulley, inclined plane, wedge, screw
What is mechanical advantage? Correct Answer-The ratio of the
magnitude of the resistance and effort forces. The ratio of distance
traveled by the effort and the resistance force.
What is work? Correct Answer-The force applied on an object times
distance the object ravels parallel to the force
If the MA is greater than 1: Correct Answer-there is LESS EFFORT
FORCE but GREATER EFFORT DISTANCE to overcome the
resistance force.
If the MA is less than 1: Correct Answer-there is GREATER EFFORT
FORCE but LESS EFFORT DISTANCE to overcome the resistance
force.
What is IMA? Correct Answer-ideal mechanical advantage and it is the
ratio of distance traveled by effort and resistance
, What is AMA? Correct Answer-actual mechanical advantage and it is
the ratio of force magnitudes
What is a lever? Correct Answer-A rigid bar used to exert a pressure or
sustain a weight at one point of its length by the application of a force at
a second point and turning on a fulcrum at a third
What is a first class lever? Correct Answer-The fulcrum is located
between the effort and the resistance
What is a second class lever? Correct Answer-resistance is located
between the fulcrum and the effort force; ERF; mechanical advantage is
always greater than one
What is a third class lever? Correct Answer-The effort is located the
middle of the resistance and the fulcrum; REF; mechanical advantage is
always less than one
What is moment? Correct Answer-The turning effect of a force about a
point equal to the magnitude of the force times the perpendicular
distance from the point to the line of action from the point to the line of
action from the force
Formula for moment Correct Answer-M= d x F
What is torque? Correct Answer-A force that produces or tends to
produce rotation or torsion
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller cracker. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.99. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
83100 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now