A-Level Physics Specification

OCR A H556

Section 5.2.2: Centripetal force

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#5.2.2a

a constant net force perpendicular to the velocity of an object causes it to travel in a circular path

#5.2.2b

constant speed in a circle;
\(v = ωr \)

#5.2.2c

centripetal acceleration;
\(a = \dfrac{v^2}{r} \); \(a = ω^2r \)

#5.2.2d

(i) centripetal force;
\(F = \dfrac{mv^2}{r} \); \(F = mω^2r \)

(ii) techniques and procedures used to investigate circular motion using a whirling bung.