Q146 · Practice questionComplex familiar1 mark
QUESTION 146
A block rests on a smooth incline at angle . A force is applied parallel to the incline, as shown. What is the magnitude of the normal force?
(A)
(B)
(C)
(D)
WORKED SOLUTION
1 markAnswer C
ANSWER
C.
Worked solution
Perpendicular to the surface there is no acceleration. has no perpendicular component, so .
Equivalent physically justified methods and consistent equivalent units accepted.
Displayed decimals are model answers; accept appropriate significant figures and consistent rounding from stated constants.
Select C.
Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.
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