12–169. The mechanism of a machine is constructed so that the roller at A follows the
Автор: Dr Faisal Kroush
Загружено: 2025-12-30
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12–169. The mechanism of a machine is constructed so
that the roller at A follows the surface of the cam described
by the equation r = (0.3 + 0.2 cos θ ) m. If θ ̇= 0.5 rad/s and
θ ̈ = 0, determine the magnitudes of the roller’s velocity and
acceleration when θ = 30°. Neglect the size of the roller.
Also determine the velocity components (vA)x and (vA)y
of the roller at this instant. The rod to which the roller is
attached remains vertical and can slide up or down along
the guides while the guides translate horizontally to the left.
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