+1 vote
in Machine Dynamics by (34.3k points)
Which of the following is incorrect regarding inertia force?

(a) Imaginary force

(b) Acts upon a rigid body

(c) Brings the body to equilibrium

(d) Same direction as of accelerating force

I had been asked this question during an online interview.

This intriguing question comes from Resultant Effect of a System of Forces Acting on a Rigid Body in chapter Inertia Forces in Reciprocating Parts of Machine Dynamics

1 Answer

0 votes
by (38.6k points)
The correct option is (d) Same direction as of accelerating force

To explain: The inertia force is an imaginary force, which on acting upon a rigid body has a tendency to bring it in an equilibrium position. Numerically it is equal to the magnitude of accelerating force, but the direction of this force is opposite.

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