No work is done by a force on an object if (a) the force is always perpendicular to its velocity
Answers
Answer:
Explanation:
It is the correct answer.
As if velocity is perpendicular to the Force then displacement will be also perpendicular to Force because velocity and displacement have same direction.
So work done equal to zero.
Answer:force is always perpendicular to its velocity
Explanation:
W=∫F.ds
Therefore, keeping ds non-zero requires movement of both the body and the point where the force is applied to the body.
Also, the angle between force and displacement (velocity) must not be 90 to keep the dot product non-zero.
If the force is perpendicular to the object's velocity, no work is done because there is no displacement along the force. According to Newton's second law of motion, acceleration is always in the direction of the force. You can't work unless you move your body in the direction of the force.
Work is complete when the force applied to an object indicates the displacement of that object.
If you push a block with some force "F", the object will move with constant acceleration or speed up or slow down depending on the direction of the force.
Energy cannot be formed or destroyed, so it must be transformed into another form.
This posture is called work complete. Energy decreases when negative energy is completed, and energy increases when positive work is completed. Now let's look at how completed work is determined.
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