*I tried \"can be increased by shifting mass in toward the axis ofrotation,\" bu

Question

*I tried "can be increased by shifting mass in toward the axis ofrotation," but it said it wasn't the correct answer. So if someonecould help, I'd really appreciate it. Thank you.

When an object is effectively isolated from external torques, likean ice skater twirling on the tip of one skate, the angularmomentum of the object
can be increasedby shifting mass out away from the axis of rotation.
can be decreasedby shifting mass out away from the axis of rotation.
can be increasedby shifting mass in toward the axis of rotation.
can be decreasedby shifting mass in toward the axis of rotation.
cannot be changedexcept by friction at the point of contact.

Explanation / Answer

       From the conservation ofangular momentum if there is no external torque on the system thenthe angular momentum is conserved .                        Inthis case also there is no change in angularmomentum        Then the correct answeris cannot be changed except by friction at thepoint of contact.  

Related Questions

Navigate

• Browse (All)
• Browse #
• Subjects

---