Table of Contents
- 1 How do machines multiply force?
- 2 Can work be multiplied by a machine?
- 3 What should be done to multiply force in simple machine?
- 4 Does all simple machines increase force?
- 5 What do we call the number that tells how many times a machine multiplies force?
- 6 What will be used to multiply force or speed in?
- 7 Can a machine multiply force at the expense of distance?
- 8 How does a simple machine make work easier?
How do machines multiply force?
Simple machines make work easier by multiplying, reducing, or changing the direction of a force. The scientific formula for work is w = f x d, or, work is equal to force multiplied by distance. Simple machines cannot change the amount of work done, but they can reduce the effort force that is required to do the work!
Are machines always used to multiply force?
Simple machines are devices that can be used to multiply or augment a force that we apply – often at the expense of a distance through which we have to apply the force. A few simple machines are the lever, nail puller, wheelbarrow, crank, etc.
Can work be multiplied by a machine?
Machines cannot multiply energy or work input. To say that a machine has a certain mechanical advantage tells you how much the machine multiplies input force.
How many times a force is multiplied by a machine is the mechanical?
Work and Simple Machine
| A | B |
|---|---|
| mechanical advantage | number of times the input force is multiplied by a machine; euqal to the outpout force divided by the input force |
| output force | force exerted by a machine |
| power | rate at which work is done; equal to the work done divided by the time it takes to do the work |
What should be done to multiply force in simple machine?
A lever consists of a rigid bar which is free to turn about a fixed pivot point called a fulcrum. The lever can be used to multiply force and lift weights.
What do we call the number that tells how many times a machine multiplies a force?
Physical Science – Chapter 8 – Work and Machines
| A | B |
|---|---|
| mechanical advantage | a number that tells how many times a machine multiplies force; can be calculated by dividing the output force by the input force |
| ideal machine | a machine that has 100 percent mechanical efficiency |
Does all simple machines increase force?
In a machine, force is increased if the effort moves a larger distance than the load. 3 A single fixed pulley does not increase or decrease force.
Is a machine that does work with only one movement of the machine?
simple machine
A machine that does work with only one movement is a simple machine.
What do we call the number that tells how many times a machine multiplies force?
mechanical advantage. a number that tells how many times a machine multiplies force; can be calculated by dividing the output force by the input force.
What is the number of times a machine multiplies the effort force?
mechanical advantage
The mechanical advantage is the number of times a machine multiplies the effort force. The longer the distance over which the effort force is applied, the greater the mechanical advantage of the machine. 7.1.
What will be used to multiply force or speed in?
The wheel and axle is often used to multiply speed instead of force.
Can a simple machine multiply a small force?
From this perspective it becomes evident that a simple machine may multiply force. That is, a small input force can accomplish a task requiring a large output force. But the constraint is that the small input force must be exerted through a larger distance so that the work input is equal to the work output.
Can a machine multiply force at the expense of distance?
Many machines multiply force. It is usually done at the expense of distance, since the total work input has to equal work output. Lever, wedge, reduction gear, hydraulic cylinder, automobile jack, … What are some good ways to improve English grammar and writing abilities for a non-native speaker?
How are force multipliers used to make work easier?
Machines can make work easier by reducing the amount of force necessary to move an object or increasing the speed of an object relative to the force applied to it. Force multipliersare devices that reduce the amount of force necessary to move an object.
How does a simple machine make work easier?
Simple machines make work easier by multiplying, reducing, or changing the direction of a force. The scientific formula for work is w = f x d, or, work is equal to force multiplied by distance. Simple machines cannot change the amount of work done, but they can reduce the effort force that is required to do the work!