Question

The fundamental equation for correct steering is

(a) sinɸ + sinα  = b/c

(b) cosɸ – sinα  = c/b

(c) cotɸ – cotα  = c/b

(d) tanɸ + cotα  = b/c

I got this question in class test.

Enquiry is from Velocity in Mechanisms topic in chapter Velocity in Mechanisms of Machine Kinematics

Answer 1

Right option is (c) cotɸ – cotα  = c/b

Explanation: The condition for correct steering is that all the four wheels must turn about the same instantaneous centre.

The fundamental equation for correct steering is

cotɸ – cotα  = c/b

where ɸ and α = Angle through which the axix of the outer wheel and inner wheel turns respectively

      c = Distance between the pivots of the front axles

      b = Wheel base.