a) 3/4th size of plough
b) 3/4th size of share
c) 3/4th size of tractor
d) 3/4th size of frog
Answer: a
Explanation: Centre of resistance is the point at which the resultant of all the horizontals and vertical force acts. The centre lies at a distance equal to 3/4th size of plough from the share wing.
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