Abingdon School - D&T Revision

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Calculating Material Costs

A student is manufacturing a cabinet side from a sheet of plywood. Calculate the total area in m² and the resulting cost. (1m² = 1,000,000 mm²)

(a) Area (m²):

(b) Total Cost (£):

Rotary Motion: Gear Ratios

A motor is attached to the Driver gear. Calculate the Gear Ratio and the final output speed of the Driven gear.

(a) Gear Ratio:

: 1

(b) Output Speed (RPM):

Mechanical Advantage (Class 1 Lever)

Calculate the Mechanical Advantage (MA) of this lever system, and the minimum Effort Force required to lift the Load.

(a) Mechanical Advantage:

(b) Effort Force (Newtons):

Manufacturing Percentage Wastage

A student cuts a smaller part out of a standard blank of acrylic. Calculate the waste area, and then calculate what percentage of the original blank was wasted.

(a) Total Waste Area (mm²):

(b) Percentage Wasted (%):

Material Volume & Mass

Calculate the total volume of this block of material, and then use its given Density to find its overall Mass.

(a) Volume (cm³):

(b) Mass (grams):