# Cart with propeller - Find force of friction

• jenn3999
In summary, the conversation discusses the problem of finding the force of friction for a cart with a motor-driven propeller on an incline. The suggested solution is to use Newton's Second Law and draw a free body diagram to determine the force of gravity and other forces that contribute to the acceleration of the cart.
jenn3999
can anyone show me how to solve this problem?

a cart on wheels with a mass of 250 g has a motor driven propeller with a force P of .3 N, and it moved down an incline of 30 degrees with an acceleration of 3.5 m/s^2.

What is the force of friction ?

determine coefficent of friction

The one and only key word: Newton's 2nd law.

1) draw a free body diagram of the problem
2)find the force of gravity on the cart,
3)and add this to other forces in that direction, you know the true acceleration therefore use Newtons second law to find force,
hope this helps :)

Last edited:

## 1. What is the purpose of the "cart with propeller" experiment?

The purpose of the experiment is to determine the force of friction between the cart and the surface it is moving on.

## 2. How is the force of friction calculated in this experiment?

The force of friction is calculated by measuring the acceleration of the cart with the propeller running and without the propeller running, and then using the formula F = ma where F is the force of friction, m is the mass of the cart, and a is the acceleration.

## 3. What factors can affect the force of friction in this experiment?

The force of friction can be affected by the weight of the cart, the surface it is moving on, and the speed at which it is moving.

## 4. How can the results of this experiment be used in real-world applications?

The results of this experiment can be used to understand the force of friction in different situations, such as when designing vehicles or calculating the friction needed for objects to stay in place on a surface.

## 5. Are there any limitations to this experiment?

Some limitations of the experiment may include inaccuracies in measurement and the assumption that the force of friction remains constant throughout the movement of the cart.

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