Total resistive force by water and air on water skier

Then, use Newton's second law (F=ma) to find the total resistive force, which is equal to the mass of the skier multiplied by their acceleration. To find the upward force exerted by the water, use the law of action and reaction (Newton's third law) and consider the force of the water on the skier as the reaction force to the skier's weight. In summary, use Newton's laws of motion to find the total resistive force and the upward force exerted by the water on the skier.
  • #1
trosenau
1
0
A water skier of mass m is pulled at a constant velocity v by a boat of mass M. Tension in the rope held horizontally by the skier is T.
a) Find the total resistive force by the water and air on the skier.
b) How much upward force does the water exert on the skier?
What equation would I use to start this problem?
 
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  • #2
trosenau said:
A water skier of mass m is pulled at a constant velocity v by a boat of mass M. Tension in the rope held horizontally by the skier is T.
a) Find the total resistive force by the water and air on the skier.
b) How much upward force does the water exert on the skier?
What equation would I use to start this problem?

First, think about what is happening to the water skier, and how the skier is being pulled behind the boat. This is more important than frantically reaching into a bag of formulas, hoping to pick the right one (or two or three ...)

If it helps, draw a free body diagram of just the water skier and identify all of the forces acting on him/her.
 

1. What is total resistive force by water and air on a water skier?

The total resistive force by water and air on a water skier is the combined force that opposes the motion of the skier as they move through the water. It is made up of both drag force from the water and air resistance from the surrounding air.

2. How does the total resistive force affect a water skier?

The total resistive force can greatly impact a water skier's speed and ability to maneuver on the water. The higher the resistive force, the more difficult it is for the skier to maintain their speed and control their movements.

3. What factors determine the total resistive force on a water skier?

The total resistive force on a water skier is influenced by several factors, including the skier's speed, the shape and size of their body, the design and weight of their equipment, and the conditions of the water and air, such as temperature and wind speed.

4. How can the total resistive force on a water skier be reduced?

To decrease the total resistive force on a water skier, they can try to streamline their body and equipment to reduce drag and air resistance. Additionally, skiers can adjust their speed and technique to minimize the effects of resistive forces.

5. How do scientists measure the total resistive force on a water skier?

Scientists can measure the total resistive force on a water skier using various instruments, such as force meters and pressure sensors. They can also conduct experiments in controlled environments and analyze data to calculate the resistive force on a skier based on their speed, body shape, and other factors.

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