Just add the forces on the desk. Use a positive sign for one direction, a negative sign for the opposite direction.
50 N upward
50 N upward
The net force applied downward to the ground would be 495 newtons (450 N from your weight + 45 N from the backpack). This is because weight is a force that acts downward due to gravity, so the forces from your weight and the backpack both contribute to the total downward force.
The net force applied is 4 N upward (39 N - 35 N = 4 N).
The net force applied is 4 N upward. This is calculated by subtracting the weight of the box (35 N downward) from the force applied to lift it (39 N upward), resulting in a net force of 4 N in the upward direction.
50 N upward
50 N upward
270 N if in the same direction add if oposite subtract
The net force applied downward to the ground would be 495 newtons (450 N from your weight + 45 N from the backpack). This is because weight is a force that acts downward due to gravity, so the forces from your weight and the backpack both contribute to the total downward force.
It is gravity on earth
The net force applied is 4 N upward (39 N - 35 N = 4 N).
4 N upward
The net force applied is 4 N upward. This is calculated by subtracting the weight of the box (35 N downward) from the force applied to lift it (39 N upward), resulting in a net force of 4 N in the upward direction.
The net force applied is equal to the difference between the upward force and the weight of the box. In this case, it would be 39 N - 35 N = 4 N. Therefore, a net force of 4 N is applied to pick up the box.
downward
When there is that force that pulls downward. Example, when you climb a mountain. You will fell that there is that gravity pulling downward.
By applying an upward force on the object that is greater than the downward force of Earth's gravity acting on it. Somewhat the same thing that you do with your leg muscles when you walk upstairs, or go in for a jump shot.