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Edexcel | Physics WPH0 | S 13 6 1 | 1 hour 30 minutes
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2
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A student is asked to carry out an experiment about the energy transferred when a

trolley is pulled across a table. The apparatus is set up as shown.

As the block falls it loses gravitational potential energy and the trolley and block

together gain kinetic energy. The student is asked to find out what fraction of the

gravitational potential energy becomes kinetic energy.

The student writes an outline plan for an experiment and produces a table.

Add more detail to improve this plan. You should do the following:

2
(a)
Add To Classified
3 Mark s

complete the table,

Award one mark for each correct insertion, distance & time must

have units

2
(b)
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1 Mark

add a line to the diagram to show the distance d,

d from bottom of mass to floor as shown on diagram (1)

2
(c)
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2 Mark s

describe how you would measure d accurately (you may add more to the diagram if

you wish),

Max 2

(Vertical) rule with use of set square (1)

Use of set square at bottom of block

Or Eye level with bottom of block (do not credit just ‘avoid parallax’) (1)

Rule close to block

Or Marker shown (1)

Marks can be awarded from diagram

2
(d)
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1 Mark

describe how you would make each measurement of t accurate,

Max 1

Start stopwatch when block/trolley released and stop when block hits

floor (1)

Or Repeat several times and average (1)

2
(e)
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1 Mark

comment on any safety aspect of this experiment.

Identifies an appropriate risk and suitable precaution

Or explains why risk is insignificant

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