A constant horizontal force of 20n pulls a wooden block with a mass of 4kg over a distance of 0,8m on a horizontal frictionless surface.calculate the work done by the force.

To calculate the work done by a force, we can use the formula:

Work = Force × Distance × cos(θ)

In this case, the force applied is horizontal and there is no angle involved, so the cosine of the angle is 1. Therefore, we can simplify the formula to:

Work = Force × Distance

Plugging in the given values:

Force = 20 N
Distance = 0.8 m

Work = 20 N × 0.8 m = 16 Joules

Therefore, the work done by the force is 16 Joules.

To calculate the work done by the force in this scenario, you can use the formula:

Work = Force × Distance × Cos(θ)

Where:
- Work is the amount of energy transferred or done by the force.
- Force is the magnitude of the force applied.
- Distance is the displacement in the direction of the force.
- θ represents the angle between the force vector and the displacement vector.

In this case, the force is constant horizontal force of 20N, and the block is moved horizontally. Since the force and displacement are in the same direction (horizontal), the angle θ is 0 degrees, and therefore the cosine of θ is 1.

Substituting the values into the formula, we get:

Work = 20N × 0.8m × Cos(0)

Since Cos(0) equals 1, we can simplify it further:

Work = 20N × 0.8m × 1

Work = 16 Joules

Therefore, the work done by the force is 16 Joules.