Consider the two conditions for equilibrium of a rigid object: zero net force and zero net torque.(a) Give an example in which the net force acting on an object is zero and yet the net torque is nonzero. , (b) Give an example in which the net torque acting on an object is zero and yet the net force is nonzero. :

\(\text{Yes, if moving with constant velocity (dynamic equilibrium)}\) \(\text{Two equal and opposite forces forming a couple; }\sum \mathbf{F}=0,\;\sum \tau \neq 0\) \(\text{Single force through center of mass; }\sum \tau =0,\;\sum \mathbf{F}\neq 0\)

Consider the two conditions for equilibrium of a rigid object: zero net force and zero net torque. • Nerd Notes

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AP Physics 1

5.5 Rotational Equilibrium and Newton’s First Law in Rotational Form

5.3 Torque

2.5 Newton’s Second Law

Multi-Unit

BeginnerFRQConceptual26.1k

Consider the two conditions for equilibrium of a rigid object: zero net force and zero net torque.

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