If you try to lift a 2 x 10 plank by applying 25 N force but plank does not move did you do any work?
work is the product of force and the distance moved in the direction of the force. No motion = no work
To determine if any work was done when you tried to lift the plank, we need to understand the concept of work in physics. Work is defined as the product of the force applied on an object and the displacement of the object in the direction of the force.
In this scenario, you applied a force of 25 Newtons to lift the plank. However, if the plank did not move, it means there was no displacement in the direction of the force. Therefore, no work was done in this situation.
To calculate work, you can use the following formula:
Work = Force × Displacement × cosθ
Where:
- Force is the magnitude of the force applied (in Newtons)
- Displacement is the magnitude of the distance the object moved (in meters)
- θ is the angle between the direction of the force and the direction of displacement (if they are not parallel)
In this case, since there was no displacement, the value of displacement would be zero. So, according to the formula, Work = Force × Displacement × cosθ = 25 N × 0 m × cosθ = 0 J (joules).
Therefore, no work was done when you tried to lift the plank because there was no displacement along the direction of the force.