A female gymnast weighs 400 N.

If she is hanging stationary from a high bar,
how many forces are acting on her?

To determine the number of forces acting on the gymnast, we need to analyze the situation. When the gymnast is hanging stationary from a high bar, there are two forces acting on her.

1. The force of gravity: This force pulls the gymnast down towards the ground with a magnitude equal to her weight. In this case, her weight is given as 400 N. Therefore, the force of gravity acting on her is 400 N, directed downwards.

2. The upward force exerted by the high bar: The high bar provides an upward force that counteracts the force of gravity and prevents the gymnast from falling down. This force is called the support force or normal force. Its magnitude is equal to the force of gravity and acts in the opposite direction, so it is 400 N, directed upwards.

Therefore, when the gymnast is hanging from the high bar, there are two forces acting on her: the downward force of gravity (400 N) and the upward support force provided by the high bar (400 N).

When a female gymnast is hanging stationary from a high bar, there are two forces acting on her.

1. The first force is her weight, which is directed downwards due to gravity. In this case, her weight is given as 400 N. This force is pulling her downwards towards the Earth.

2. The second force is the upward force exerted by the high bar on the gymnast's hands. This force is known as the normal force and it acts in the opposite direction to the weight of the gymnast. It prevents her from falling down and allows her to hang stationary from the high bar.

So, in summary, the two forces acting on the gymnast are her weight (directed downwards) and the normal force from the high bar (directed upwards).

gravity is acting on her, and the high bar acts on her with the same force...hopefully...Therefore, she remains stationary.