Máquinas simples Flashcards
Conhecer a aplicação das máquinas simples no cotidiano (26 cards)
What is a simple machine?
A device that changes the direction or magnitude of a force.
How many types of simple machines are there?
There are six types of simple machines.
What are the six types of simple machines?
Lever, wheel and axle, pulley, inclined plane, screw, and wedge.
True or False: A lever is a type of simple machine.
True.
What is the function of a lever?
To amplify force or change the direction of a force.
Fill in the blank: The _____ is a simple machine that consists of a circular object that rotates on an axis.
wheel and axle
What is a pulley used for?
To lift heavy objects by changing the direction of the force applied.
Which simple machine is used to reduce friction when moving something?
Inclined plane.
True or False: A screw is an inclined plane wrapped around a cylinder.
True.
What is the purpose of a wedge?
To separate or cut objects apart.
What is mechanical advantage?
The ratio of the output force to the input force in a machine.
Fill in the blank: The _____ of a lever is the distance from the fulcrum to where the force is applied.
effort arm
How does an inclined plane make work easier?
By allowing objects to be raised over a distance with less force.
What is the formula for calculating mechanical advantage in a lever?
Mechanical Advantage = Length of effort arm / Length of resistance arm.
True or False: A wheel and axle can be used to increase speed.
True.
What is the primary benefit of using a simple machine?
To make work easier by reducing the amount of force needed.
Which simple machine is commonly used in construction to lift materials?
Pulley.
Fill in the blank: A simple machine that helps in fastening objects together is called a _____
screw.
What is a common example of a wedge?
An axe.
True or False: The effort force is always greater than the load force in simple machines.
False.
In which type of simple machine does the fulcrum lie between the effort and the load?
Lever.
What does the term ‘fulcrum’ refer to?
The pivot point around which a lever rotates.
Fill in the blank: The _____ is a simple machine that consists of two inclined planes joined back to back.
wedge.
What type of simple machine is a seesaw?
Lever.
