☰ Contents · Physics

Circular-motion quantities. Centripetal acceleration

Lessons 16–17 · 2 lessons · P.Q. Habibullayev, A. Boydedayev, A.D. Bahromov, S.O. Burxonov. Physics Grade 7, revised and enlarged 4th edition. “O‘zbekiston milliy ensiklopediyasi” State Scientific Publishing House, Tashkent, 2017
Answers are for parents and teachers.
1
A wheel turns 30 times in 90 s. Its period (s)?
2
ω = 7 rad/s, R = 4 m. Linear speed (m/s)?
3
υ = 12 m/s, R = 24 m. a (m/s²)?
4
T = 3.14 s. Compute ω = 2π/T (π ≈ 3.14).
5
Why should you not touch a spinning bicycle wheel without an adult?