Subtopic: Functional requirements, principles of working, construction and operation of manual, animal, tractor and renewable energy operated equipment for tillage, sowing, planting, fertilizer application, inter-cultivation, spraying, mowing, chaff cutting, harvesting and threshing
Question Statement:
The horizontal component of resultant soil thrust (T) acting on each gang of a single acting disc harrow is 1650 N. The resultant downward load (W) acting on each gang is 2500 N. The perpendicular distance of T from the gang axis is 200 mm. In order to get a uniform depth of cut, the distance between the line of action of W and the centre of gang in mm will be __________.
Official Answer Key:
131 to 133
Step-by-Step Solution & Explanation
• For uniform depth of cut, the moment of T about the gang axis must be balanced by the moment of W about the same axis: T × (perp. distance of T) = W × (perp. distance of W).
• x = T × 200 / W = 1650 × 200 / 2500 = 330,000/2500 = 132 mm, matching the accepted range 131–133.
Section 3 — Farm Power
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