How much work is done to the wagon by the girl pulling her brother

shown in Figure 4.16, if she
travels 25 m? F= (50N), 30 DEGREES ANGLE

Work = 50*cos30 * 25 = 1083 Joules.

To calculate the work done by the girl pulling the wagon, we need to use the equation:

Work = Force × Distance × cosθ

Here, the force is given as 50 N and the distance is given as 25 m. However, we also need to take into account the angle between the force and the direction of motion, which is given as 30 degrees.

Step 1: Convert the angle from degrees to radians.
To do this, we use the formula: radians = degrees × π / 180

In this case, we have:
θ = 30 degrees × π / 180 = π / 6 radians

Step 2: Plug the values into the work equation and calculate the work done.
Work = 50 N × 25 m × cos(π / 6)
Work = 50 N × 25 m × cos(30 degrees)
Work = 50 N × 25 m × cos(π / 6)
Work ≈ 1082.5 Joules

Therefore, the work done by the girl pulling the wagon is approximately 1082.5 Joules.