Question Bank • QB_APE_EXP_076 NAT • 2 Marks

Section 6: Agricultural Process Engineering

Engineering Properties of Agriculture Produce

Subtopic: Frictional properties

Question Statement:

Soybean seeds are piled onto a flat steel plate that is gradually tilted. Sliding of seeds begins when the plate angle reaches $24^\circ$ with the horizontal. Calculate the static coefficient of friction between the seeds and the steel surface.

Answer Key:

0.445

Step-by-Step Solution & Explanation

The angle of external friction $\theta = 24^\circ$. Static coefficient of friction: $\mu = \tan(\theta) = \tan(24^\circ) \approx 0.4452$
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