Answer: “
A machine can decrease either the input force or the input distance needed to do a given amount of work”
is the best statement that describes why a machine is useful.
Which statement describes how a machine can help make work easier quizlet?
any device that makes work easier by changing a force. Explain how a machine makes work easier. Machines
make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied
, or changing the direction in which the force is applied.
Which statement describes how a machine can help?
Which statements describe how a machine can help make work easier? Check all that apply.
It can put out more force than the input force by decreasing the distance through which force is applied
. It can increase the amount of work performed if the output force is in the same direction as the input force.
What is a result of using a machine?
Answer choices:
The mechanical advantage makes
the work output greater than the work input. The machine can put out force without having any force applied to it. A large force can be exerted through a long distance to have a small force exerted through a short distance.
What is the purpose of using a machine when doing work?
Contrary to popular belief, machines do not increase the amount of work that is done. They just change how the work is done. Machines
make work easier by increasing the amount of force that is applied, increasing the distance over which the force is applied
, or changing the direction in which the force is applied.
How a machine can help make work easier?
There are three ways simple machines make work easier:
by increasing the distance through which force is applied
, by changing the direction of applied force, or by multiplying force of speed of the energy applied. … Turning the wheel a greater distance produces a short and more powerful movement at the axle.
What is impossible for a machine?
What is impossible for a machine to do? …
It can apply a force to an object in a different direction than the force applied to the machine
. It can increase the distance through which a force acts by exerting less force than was used on it.
What are the two things that a machine can change?
Machines allow
force to be applied over
a greater distance, which means that less force will be needed for the same amount of work. When a machine changes the size of the force, the distance through which the force is exerted must also change. Force or distance can increase, but both cannot increase.
How Can machines be made more efficient?
Because all machines lose input work to friction, one way to improve the efficiency of a machine is
by reducing friction
. Oil is used to reduce friction between the moving parts of car engines. The use of oil makes engines more efficient. … Bicycles lose energy to friction and to air resistance.
Is a broom an example of a machine?
For example, a simple ordinary broom is a machine. It is a form of
a lever
. … They are a lever, pulleys, inclined plane, wheel and axle, screw, and wedge. The lever is used very often an example of a lever is a broom.
What is the mechanical advantage of the machine?
In machines that transmit only mechanical energy,
the ratio of the force exerted by the machine to the force applied to the machine
is known as mechanical advantage. Under mechanical advantage the distance the load will be moved will be only be a fraction of the distance through which the effort is applied.
How does using a ramp make work easier?
A ramp is an example of an inclined plane. Using
an inclined plane makes it easier to move an object
. It takes less force to move an object in an upward direction on an inclined plane than it does to lift the object straight up. … The ramp is long and not as steep.
What is the efficiency of the machine?
Efficiency is
the percent of work put into a machine by the user
(input work) that becomes work done by the machine (output work). It is a measure of how well a machine reduces friction.
What are the two uses of machine?
- Image Recognition. The image recognition is one of the most common uses of machine learning applications. …
- Voice Recognition. …
- Predictions. …
- Videos Surveillance. …
- Social Media Platform. …
- Spam and Malware. …
- Customer Support. …
- Search Engine.
What would be your life without simple machines?
The six basic simple machines include wheel and axles, levers, inclined planes, pulleys, screws, and wedges. … Our world would be a mess without these simple machines. It would be difficult because I would get up, to get ready for school, but there will be no way to open my bathroom and no way to sharpen my pencils.
Why are machines important?
Simple machines are
useful because they reduce effort or extend the ability of people to perform tasks beyond their normal capabilities
. Simple machines that are widely used include the wheel and axle, pulley, inclined plane, screw, wedge and lever.
