Question

What is a simple machine?

A.
any object that makes work easier when a single force is applied by changing the strength or the direction of that force

B.
any combination of objects that magnifies the input force so that the output force is greater

C.
any object or group of objects, that when connected to a source of electricity, make work easier

D.
any object, that when connected to a fossil fuel source, makes work easier

Answer 1

@jdoe0001 @dan815 @SolomonZelman

Answer 2

@ganeshie8

Answer 3

@bohotness @Godlovesme

Answer 4

@iambatman

Answer 5

@Ashleyisakitty @EclipsedStar @ElonaSushchik

Answer 6

@Data_LG2

Answer 7

Let's do elimination method starting with letter D and C. Examples of simple machines, from what I remember, are lever, screw, pulley and etc. Are these simple machines needs to be connected to fossil fuels/electricity to make them work? hint: "simple" machine. Do you think these choices make sense?

Now moving on to the next choice, B. "SIMPLE" machine, when we say 'simple' does it make sense when we're talking about different objects combined together to make life easier? I don't think so...if it is, they should be called complex machine xD

and now for the last one, choice A. From the definition of simple machine: a device that alters the direction and magnitude of the force to make it very useful. Do you think this choice make sense?

Answer 8

a