- Analyse the motions of the following mechanisms and state whether they involve pure rotation, pure translation or are

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Analyse the motions of the following mechanisms and state
whether they involve pure rotation, pure translation or are a
mixture of rotation and translation components:
(a) The
keys on a computer keyboard.
(b) The
pen in an XY plotter.
(c) The
hour hand of a clock.
(d) The
pointer on a moving-coil ammeter.
(e) An
automatic screwdriver.