Physics · Oct / Nov 2022 · Paper 61 · Question 4
0625
As printed in the paper
The question as text
A student investigates the horizontal distance travelled by a metal ball after it rolls off the end of a plastic track. Fig. 4.1 shows the set-up. The ball rolls down a plastic track. The left-hand side of the track is fixed. The right-hand side can be adjusted so that the ball comes off the track at different angles. The student measures the horizontal distance that the ball travels from the right-hand end of the track to the point that it hits the floor. Plan an experiment to investigate how the horizontal distance travelled by the metal ball depends on the angle that the right-hand end of the track makes with the bench. bench clamp track floor Fig. 4.1 The following apparatus is available to the student: • track with stand, boss and clamp • selection of metal balls. Other apparatus normally available in a school laboratory can also be used. In your plan, you should: • list any additional apparatus required • explain briefly how you would do the investigation, including the measurements you would take • state the key variables to be kept constant • draw a suitable table, with column headings, to show how you would display your readings (you are not required to enter any readings in the table) • explain how you would use the results to reach a conclusion.
Read automatically from the paper; the printed page above is exact.
Show the answer and mark scheme
MP1
(Metre) rule / tape measure
MP2
Release ball to roll down track, measure how far it travels.
MP3
Repeat for at least 2 more different angles of right-hand side of track
MP4
Clear identification of the correct distance to be measured (e.g. from table leg or other point identified on floor to point of impact with track)
OR clear explanation of how to identify point of impact (e.g. using a sand tray)
MP5
Constant variable identified
Release height for ball
Or same ball every time / same weight / mass / size of ball
MP6
Table consistent with their method (if method correct with columns for distance travelled and angle of track, with units) MP7
Analysis based on their table
Graph of angle against distance travelled, or compare angle with distance travelled (or the equivalents for their method) Additional graph notes:
NOTE: The principle to apply here is ‘could I draw a significantly better line, using these points, under examination conditions?’ If the answer is definitely ‘yes’, do not award the mark.
NOTE: – If candidate’s scale consists of actual readings at equal intervals this will produce a perfect straight line! The only mark available in this case is the first (axes right way round and labelled) So maximum 1.
– If axes are wrong way round, the other 3 marks are still available.
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