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A particle moves along a portion of the parabolic path y? = 4 – x, where x and y are in
meter, within the time interval 0 <t < 10 s. The horizontal component of the position of
the particle is defined as x = 4 sin (t) where t is in second and t is angle in radian.
, calculate (a) the speed and (b) the magnitude of the
20
At the instant when t=1.5s
normal acceleration of the particle. Hint (you may or may not use this): The radius of
curvature is expressed as:
73/2
1+
|d²y|
|dx²

y? = 4-x
1
1
2
x (m)
3.
3.
2.
(w) h

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