Work Done and Energy Transfer

Work and Energy CCEA Physics page 9

Learning Intentions ,[object Object],[object Object],[object Object],[object Object]

I’VE BEEN WORK ING ALL FREAKIN’ DAY!!! Some people work harder than others… In Science the word ‘ work ’ has a very definite meaning… Even Jack ‘I always stop the terrorists’ Bauer knows that energy and work are interrelated!!

By definition ,[object Object],[object Object],F d

Now your turn… ,[object Object],F d F F F d Is it an example of work?

Calculating Work ,[object Object],Work = Force x Displacement Wee note- The displacement needs to be in the same direction as the force W = F x d Word Equation Dimensions Units Joules = Newton x metre

Using the equation ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Exercise 1 ,[object Object],[object Object],[object Object],30 150 150 sin 30 = 75 metres 48900 J or 48.9 kJ 56250 J or 56.25 kJ

The force in the equation is linked to the mass, how? What is the total force in the question? What is the ‘work done’ equation Put the values of the force (in Newtons) and the distance (in metres) into the equation Work Done- steps needed to complete the example question 1 2 3 4

Work Done and Energy Transfer

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