A cam is used to operate a platform that repeatedly lifts boxes for a height of 40 mm as shown.  One cycle of the cam has the following motion requirements:  Rise to 40 mm in 1.5 s, Dwell for 0.25 s, Fall for 20 mm in 1 s; Dwell for 0.25 s; Fall a further 20 mm in 1 s and the cycle repeats after this.  The  required speed of cam is.............rpm and the angle turned by cam during the Rise motion is...........degrees.

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