If the torque acting on a rigid body, under the application of a force, is zero then it’s

Question

If the torque acting on a rigid body, under the application of a force, is zero then it’s (A) linear momentum is conserved (B) angular momentum is not conserved (C) energy is conserved (D) angular momentum is conserved

Tardigrade Admin · Accepted Answer

Angular momentum of a system (may be particle or body) remains constant, if resultant torque acting on it is equal to zero. As L=I ω so, if τ=0 then I ω= constant

Q. If the torque acting on a rigid body, under the application of a force, is zero then it’s

linear momentum is conserved

angular momentum is not conserved

energy is conserved

angular momentum is conserved

Angular momentum of a system (may be particle or body) remains constant, if resultant torque acting on it is equal to zero.
As $L = I ω$ so, if $τ = 0$
then $I ω =$ constant

Q. If the torque acting on a rigid body, under the application of a force, is zero then it’s

linear momentum is conserved

angular momentum is not conserved

energy is conserved

angular momentum is conserved

Angular momentum of a system (may be particle or body) remains constant, if resultant torque acting on it is equal to zero. As L=Iω so, if τ=0 then Iω= constant

Angular momentum of a system (may be particle or body) remains constant, if resultant torque acting on it is equal to zero.
As $L = I ω$ so, if $τ = 0$
then $I ω =$ constant