Question

Which statements describe how a machine can help make work easier? Select two options.

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.
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.
It can exert a greater force through a greater distance than the force used on the machine.

Answer 1

• It can put out more force than the input force by decreasing the distance through which force is applied.
• It can apply a force to an object in a different direction than the force applied to the machine.

Step-by-step explanation:

Assuming the machine is a simple machine, such as a lever or pulley, the machine will not do any more work than is put into it. However, it can change the magnitude or direction (or both) of the input force required to achieve a particular output force.

Because the machine does not increase the work done, if the output force is greater, the output distance must be less.

The applicable observations are ...

• It can put out more force than the input force by decreasing the distance through which force is applied.
• It can apply a force to an object in a different direction than the force applied to the machine.