To kick a football so that it doesn’t rotate through the air, where should it be kicked relative to its center of mass?
The place where the football should be kicked relative to its center of mass so that it does not rotate.
Answer to Problem 7A
It should be kicked in line with its center of mass.
Explanation of Solution
Introduction:
The torque acting about an axis of rotation due to the force
Where,
Now to avoid the ball from rotation, it should be kicked in a way that the torque on the ball be zero. Hence, it should be kicked in the line of the center of mass which will make the angle between the force and distance as
Conclusion:
Hence, the ball should be kicked in a way to make the torque on the ball as zero in order to stop it from rotating.
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