Simple Machines

Question 1

What is a first class lever?

Answer 1

Fulcrum is Inbetween the input and output force

Question 2

What is a 2nd class lever, and a third class lever

Answer 2

The fulcrum at very end and output force between input and fulcrum(2nd)

The fulcrum is at one end, the input force is in the middle (3rd)

Question 3

What is the IMA formula for the levers?

Answer 3

Determined by dividing output force by input force IMA = dividing length of input arm by length of output arm

Question 4

Pulleys what are they made of and what is the IMA

Answer 4

Answer: made of grooved wheel with a rope looped around, IMA= in fixed pulley Ima is 1 because the input and output are the same

Question 5

Wheel and axle: what are they made of? How to you calculate their Ima?

Answer 5

Made of axle attached to a wheel (eg)doorknob

IMA: divide radius of wheel by radius of axle

Question 6

Inclined plane: what is it made of and how do you find the ima

Answer 6

Made of sloping surface on which an object can move

You can calculate the Ima by dividing length of ramp by height of ramp

Question 7

Screw: what is a screw and how do you find MA

Answer 7

Is an inclined plane wrapped around a rod

Question 8

Lever: There are 3 classes of levers, how are they classified?

Answer 8

Answer: by the location of the fulcrum, input and output force