Lecture
Consider the action of an external force. applied to a mass point
. During
elementary mass
goes way
Work force
on this path is determined by the projection of the force on the direction of movement, which is obviously equal to the tangential component
strength
But equal to the modulus of the moment
strength
relative to the axis of rotation. Job
and will be positive if
has the same direction as
negative if the direction of the vectors
and
opposite.
Given that
The work of all forces applied to the body
![]() | (5.13) |
Complete work
![]() | (5.14) |
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Physical foundations of mechanics
Terms: Physical foundations of mechanics