Wednesday, 15 September 2021 06:05

## TECHNICAL SCIENCES PAPER 1 GRADE 12 ERRATA - 2018 SEPTEMBER PREPARATORY EXAM PAPERS AND MEMOS

TECHINICAL SCIENCES

NATIONAL SECIOR CERTIFICATE
ERRATA
SEPTEMBER 2018

TO: DISTRICTS HEADS OF EXAMINATIONS PRINCIPALS OF SCHOOLS IN THE FET BAND
FROM: CES: INSTRUMENT DEVELOPMENT AND MODERATION SECTION
MS N. MBELEKI
SUBJECT: ERRATA – TECHNICAL SCIENCES (SEPTEMBER 2018)
DATE: 2018

The TECHNICAL SCIENCES Grade 12 September was written on, 07 September 2018. We were made aware of certain errors, amendments and omissions that were discovered during the marking process.
In order to address this and to ensure that learners are not disadvantaged, the following standardised approach to marking must be adopted across the Province. The following guidelines with regard to marking was prepared in conjunction with the examiner and moderator.

QUESTION 2 (USE THE FOLLOWING OPTIONS IN QUESTIONS 2.2, 2.3, 2.4 & 2.5. IF A LEARNER USES FRICTIONLESS SURFACE)

2.2 Tension (T) ✓
Applied force (F) ✓

2.3

(5)
2.4 On block A
Fnet = ma ✓
Fcosθ – T = ma
(500)(cos30º) – T ✓ = (30)(a) ✓
433,01 – T = 30a …………..(1)

On block B
Fnet = ma
T = 20a ✓ …………….(2)

Subs (2) in (1)
433,01 – 20a = 30a ✓
a = 8,66 m.s-2

2.5

 OPTION 1 OPTION 2 T = 20a ✓T =3(20)(8.66) ✓T = 173.2 N ✓ 433,01 – T = 30a ✓433,01 – T = 30(8,66) ✓T = 433,01 – 259,8T = 173,21 N ✓

(3)

8. Although the constant was not given, learners should know their constants. For incorrect constant, learners will lose marks.