# Line of pull of a MB plough is 15° with the horizontal and is in a vertical plane which at an angle of 12° with the direction of travel plane which is at an angle 12° with the direction off travel. Calculate the side draft.

Line of pull of a MB plough is 15° with the horizontal and is in a vertical plane which at an angle of 12° with the direction of travel plane which is at an angle 12° with the direction off travel. Calculate the side draft.

(a) 234.12 kg

(b) 219.06 kg

(c) 212.45 kg

(d) 200.09 kg

This question was addressed to me in homework.

My question is from Numericals on Mouldboard Plough topic in division Tillage, Disc Plough & Numericals of Farm Machinery

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The correct choice is (c) 212.45 kg

Explanation: Draft = P * cos 15° * cos 12°

Side draft = P * cos 15° * sin 15°

Or, P = $\frac{Draft}{cos15°*cos12°}=\frac{1000}{cos15°*cos12°}$ = 1058 kg

Side draft = 1058 * cos15° * sin 12°

= 212.45 kg.

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