Q201 · Practice questionComplex familiar1 mark
QUESTION 201
A spherical planet has radius . Point A is at altitude above its surface, and point B is at altitude . What is the ratio of gravitational field strengths ?
(A)
(B)
(C)
(D)
WORKED SOLUTION
1 markAnswer A
ANSWER
A.
Worked solution
The centre-to-point distances are and . Since , . The stated altitudes are not orbital radii.
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 A.
Practice question aligned to the current QCAA syllabus; review the worked solution and marking criteria.
View the QCAA syllabus