Q10 · 2025 · Paper 1Simple familiar1 mark
QUESTION 10
A string with a length of 0.60 m is connected to a small mass of 0.50 kg. The mass is swung in a horizontal circle and the tension in the string is 4.8 N. Calculate the speed of the mass.
(A)
2.0 m s−1
(B)
2.4 m s−1
(C)
4.0 m s−1
(D)
5.8 m s−1
WORKED SOLUTION
1 markAnswer B
ANSWER
B
Worked solution
The tension supplies centripetal force: . Thus m s. Option B.
Selects option B.
Worked explanation by QCE Vault; correct option verified against the QCAA answer key.