4.11A disposable tumbler which has the shape of a frustum of a cone is to be vacuum formed from a flat plastic sheet 3 mm thick. If the diameter of the mouth of the tumbler is 60 mm, the diameter of the base is 40 mm and the depth is 60 mm estimate the wall thickness at (a) a point 35 mm from the top and (b) in the centre of the base.

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ISBN:9780470458365
Author:Erwin Kreyszig
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4.11A disposable tumbler which has the
shape of a frustum of a cone is to be
vacuum formed from a flat plastic sheet
3 mm thick. If the diameter of the
mouth of the tumbler is 60 mm, the
diameter of the base is 40 mm and the
depth is 60 mm estimate the wall
thickness at (a) a point 35 mm from the
top and (b) in the centre of the base.
Transcribed Image Text:4.11A disposable tumbler which has the shape of a frustum of a cone is to be vacuum formed from a flat plastic sheet 3 mm thick. If the diameter of the mouth of the tumbler is 60 mm, the diameter of the base is 40 mm and the depth is 60 mm estimate the wall thickness at (a) a point 35 mm from the top and (b) in the centre of the base.
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