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
If the upward force acting on an object is greater than the downward force (its weight or force of gravity), the object will experience a net upward force causing it to accelerate in the upward direction. This could lead to the object moving upwards, overcoming the force of gravity pulling it downward.
4 N upward
When a basketball is thrown upward, it is acted upon by gravity, which pulls it back down towards the ground. As it moves upward, its velocity decreases until it reaches its peak height and momentarily stops, then gravity causes it to accelerate back downward due to the force of gravity.
The upward force is called lift, while the downward force is called weight or gravity.
downward
No, gravity is a downward force.
50 N upward
If the upward force acting on an object is greater than the downward force (its weight or force of gravity), the object will experience a net upward force causing it to accelerate in the upward direction. This could lead to the object moving upwards, overcoming the force of gravity pulling it downward.
4 N upward
When a basketball is thrown upward, it is acted upon by gravity, which pulls it back down towards the ground. As it moves upward, its velocity decreases until it reaches its peak height and momentarily stops, then gravity causes it to accelerate back downward due to the force of gravity.
The upward force is called lift, while the downward force is called weight or gravity.
50 N upward
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.
The force on you, if you are stationary, exactly balances gravity.
When a rocket lifts off the ground, the upward pushing force (from the engines) is greater than the downward pull of gravity, allowing the rocket to overcome gravity and lift off into the air.
The force of gravity makes the ball move downward. To move it upward, you need to supply enough force to compensate for this (to stop the downward motion) plus a little extra (to cause the ball to move upward).