Is displacement a scalar quality?
No, Displacement is a vector quantity as the direction of Displacement can be found. On the other hand Distance is a scalar quantity.
Is pushing on a wall doing work?
Work is said to be done when force is applied on an object and it gets displaced from its initial position. SI unit of work is Joules. 1 Joule is defined as 1 newton force is applied on an object and it gets displaced by 1 m distance. This represents that no work is done when force is applied on a wall.
Which Strenghtis used in pushing the wall?
Isometric exercises involve contractions that generate force against resistance. A common example is pressing your hands against a brick wall. However, any contraction of a muscle that is held for several seconds and then released follows the same principle as pushing against an outside force.
When a wall is pushed it does not move explain?
Complete step by step answer: Now, when a man pushes against a wall, even though he applies a force on the wall, the wall does not move and hence, the displacement of the wall is zero. From (1), this would mean that the work done by the man would also be zero.
Is it possible that some force is acting on the body but still the work done is zero?
Yes, it is possible that a force is acting on a body and still the work done is zero. When a man is pushing a wall, work done is zero as there is no displacement.
Can the work done be zero even when the force and displacement both are non zero justify?
Yes, it is possible. For example: If you push a wall you are applying force but there is no displacement of wall. So work done which is equal to product of force and displacement will be zero.
Can work done be zero in spite of movement of object give example?
If you carry a book across the room, keeping its height above the floor constant, then the work done is zero. There was a force and a displacement. Work done is zero because the opposition of its weight is a vertical force and the displacement is horizontal.
At what angle is work Zero?
Answer:Work done =0, when angle between 2 objects is 90 degree.