what is the value of work done when the force and displacement are perpendicular to each other
Answers
Answer:
No. You have it backwards. The simplest way to think about if work is done or how much is just to think about how much of that force is pushing that object in the direction it actually moves.
Equivalently if you just want to figure out if work is done by that force then think about whether that force could speed up or slow down the object. In order to effect the speed of an object the force must push or pull the object at least a tiny bit along the direction it moves. If the force is perpendicular to the motion then no work is done.
For instance put a ball on a perfectly flat surface at rest. Will the ball move? No. The ball just sits there because gravity pulls it straight down, perpendicular to any direction it could move. Now put the ball on a hill. The ball moves down the hill and its speed increases because gravity now has a component in the direction the ball can move.
Answer:
Zero
Explanation:
When the force and displacement are perpendicular to each other, work done by the force must be zero