2. Tarzan swings on a vine of length 4m in a vertical clrcle
under the influence of gravity. When the vine makes an
angle of =20° with the vertical, Tarzan has a speed of 5
m s'. Find (a) his centripetal acceleration at this in
stant, (b) his tangential acceleration, and (c) the resul
tant acceleration.
(Ans.(a)
20mis
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Answer:
a) 25/4
b) gsin(20°) where g is acceleration due to gravity
c) 7.12 m/s2
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