WHAT IS WORK ?. Is riding a bike work? Work or Not Work?

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Presentation transcript:

WHAT IS WORK ?

Is riding a bike work?

Work or Not Work?

Who is doing work?

Heavy backpack…Work?

IS HE DOING WORK?

Is HE or SHE doing work?

Are they doing work?

Are the girls doing work?

Work?

Is the Bear doing work

Are these guys doing work?

Is he doing Work?

Is work being done?

Is this guy working?

What does this mean?

Is work done when this happens? Direction of force Direction of motion as result of force. Object Moving

Is work done when this happens? Direction of force- uphill Direction of motion as result of gravity- sliding downhill Object moves in opposite direction of force

Is work done when this happens? Direction of force No Motion-not enough force Object not Moving

SO, WHAT IS WORK ?

Lets go back and see which Situations work was being done and not being done in.

Is riding a bike work? NOT WORK!

Work or Not Work? Lifting the box yes Walking with it, NO! Lifting the box yes Walking with it, NO!

Who is doing work? She is doing work! Him, not so much, anymore! She is doing work! Him, not so much, anymore!

Heavy backpack…Work? Work is being Done! (As long as she is lifting up the bag)

IS HE DOING WORK? ONE ARM- yes…. One Arm NO! ONE ARM- yes…. One Arm NO!

Is HE or SHE doing work? HE is not BUT.. SHE IS! HE is not BUT.. SHE IS!

Are they doing work? NO WORK being done!

Are the girls doing work? Work is being Done!

Work? NOT WORK!

Work? Work is being Done!

Is the Bear doing work NOT WORK!

Are these guys doing work? IT DEPENDS! (Are they going up or down the stairs?)

Is he doing Work? NOT WORK!

Is work being done? Work is being Done!

Is this guy working? NOT WORK!

What does this mean? Work is being Done!

Is work done when this happens? Direction of force Direction of motion as result of force. Object Moving This IS Work!

Is work done when this happens? Direction of force- uphill Direction of motion as result of gravity- sliding downhill Object moves in opposite direction of force This is NOT WORK!

Is work done when this happens? Direction of force No Motion-not enough force Object not Moving No Work here!

NOW you can Share what you think Work is!