Q6 · 2023 · Paper 1Complex familiar1 mark
QUESTION 6
An object of mass travels along a path as shown. The object takes 25 seconds to complete the semicircular section of the path.
Calculate the centripetal force experienced by the object as it moves from Y to Z.
(A)
3.0 × 103 N
(B)
7.6 × 102 N
(C)
3.8 × 102 N
(D)
7.6 × 101 N
WORKED SOLUTION
1 markAnswer B
ANSWER
B
Worked solution
The semicircle has radius 80 m. Its arc length is , so m s and N. Option B.
Selects option B.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.