2019 Year 12 IB Extended Essays

THE PHYSICS OF THE ROLLER COASTER

Error justification - The error for height of release is based on the minimum scale on the tape measure 0.2cm. - The error for average radius is 0.4 cm because of the minimum scale of the tape measure is 0.2 and the method I used to measure the radius of the loop. I simply took the sum vertical and horizontal diameters of the loop and divided it by 2 to get the radius. Since there are 2 diameters, there is double the error of 0.2 cm. GRAPH 1.1HEIGHT OF RELEASE VS MAXIMUM RADIUS

14

12

10

∆

8

46, 7.2

6, 7.2

∆

6

30, 4.8

2 MAXIMUM RAADIUS /CM ±0.4CM 12, 2 6, 0.8 ∆ ∆ 4

12, 4.8

36, 5.2

36, 0.8

0

10, 0.8

0

10

20

30

40

50

60

70

80

-2

-4

HEIGHT OF RELEASE /CM ±0.2CM

P a g e | 15

IB Diploma