Required practical's

Question 1

What is the equipment for the ‘determination of g’ experiment? (9)

Answer 1

Metre rule
Steel ball bearing
Two light gates
timer
clamp stand
clamps
electromagnet
counter weight
cushion

Question 2

What is the independent variable (changing) for the ‘determination of g’ experiment?

Answer 2

Changing the distance between the light gates - h - metres

Question 3

What is the dependent variable (measuring) for the ‘determination of g’ experiment?

Answer 3

Measuring the time taken for the ball to travel the distance between the light gates

Question 4

What are the control variables (keeping the same) for the ‘determination of g’ experiment? (3)

Answer 4

Same ball bearing
same electromagnet
same height the ball is dropped from

Question 5

Regarding the ‘determination of g’ experiment, what is the starting distance between the two light gates?

Answer 5

0.500m

Question 6

Regarding the ‘determination of g’ experiment, how is the distance between the light gates reduced?

Answer 6

By moving up the lower light gate

Question 7

Regarding the ‘determination of g’ experiment, how much is the distance between the light gates reduced for each new reading?

Answer 7

0.050m

Question 8

Regarding the ‘determination of g’ experiment, to what is the minimum distance between the light gates that you measure?

Answer 8

0.250m

Question 9

Regarding the ‘determination of g’ experiment, what is the method for the experiment? (7)

Answer 9

1.Measure the distance between the light gates
2.Reset the stopwatch
3.Turn on the electromagnet and attach the ball bearing
4.Turn off the electromagnet
5.Record the time
6.Reduce the distance between the light gates
7.Repeat

Question 10

Regarding the ‘determination of g’ experiment, which SUVAT formula is used to plot the results?

Answer 10

s = ut + 1/2at^2
h = ut + 1/2gt^2

Question 11

Regarding the ‘determination of g’ experiment, what are the axis for the results?

Answer 11

2h/t against t

Question 12

Regarding the ‘determination of g’ experiment, what is the gradient of the graph which the results are plotted?

Answer 12

m = g

Question 13

Regarding the ‘determination of g’ experiment, what are two hazards? (2)

Answer 13

Clamp stand
Ball bearing

Question 14

Regarding the ‘determination of g’ experiment, what are the risks of the two hazards: Clamp stand and ball bearing?

Answer 14

Falling on someone

Question 15

Regarding the ‘determination of g’ experiment, what are the actions that can be taken for the hazards: Clamp stand and ball bearing?

Answer 15

Counter weight (Clamp stand) and Cushion (ball bearing)