Question

In the figure given below, A and D are arbitrary masses placed Quantity L is known as _______

(a) Distance between the two masses for a true dynamically equivalent system

(b) Distance between fixed masses

(c) Distance between arbitrary masses

(d) Equivalent radius

The question was posed to me in examination.

This interesting question is from Correction Couple to be Applied to Make the Two Mass Systems Dynamically Equivalent in chapter Inertia Forces in Reciprocating Parts of Machine Dynamics

Answer 1

Correct answer is (a) Distance between the two masses for a true dynamically equivalent system

The explanation: The distance between the two masses for a true dynamically equivalent system is given by L and has the expression of (Kg^2 + l1^2)/l1.