Transcription of Physics (A-level) - CIE Notes
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Physics (A-level) - CIE Notes
1 | P a g e h t t p s : / / w w w . c i e n o t e s . c o m / Physics (A-level) Circular motion ( ): One radian (rad) is defined as the angle subtended at the centre of a circle by an arc equal in length to the radius of the circle The angular speed is defined as the rate of change of angular displacement Figure , v constant, in t object moves along the arc s and sweeps out at : s = r and dividing both sides by t: s/ t = r / t v = r Both the centripetal acceleration and force are towards the center (90 to that of the instantaneous velocity) Figure & shows the angle between two radii OA and OB & vA and vB ( ) Triangles OAB and CDE are similar Consider angle to be so small that arc AB approximated as a straight line DE/CD = AB/OA v/vA = s/r v = s(vA/r) and dividing both sides by t v/ t = ( s/ t)(vA/r) A = v2/r 2 | P a g e h t t p s : / / w w w.
1 | P a g e h t t p s : / / w w w . c i e n o t e s . c o m / Physics (A-level) Circular motion (chap.7): One radian (rad) is defined as the angle subtended at the centre of a circle by an arc equal in length to the radius of the circle The angular speed is …
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