Solving Inclined Plane Motion: Find Force for Acceleration

In summary, the problem involves a smooth, inclined plane with an angle of 30 degrees and an attraction power of 17 Newtons. The task is to find the force that gives acceleration to an object moving on the plane. This can be done by setting up equations for the forces in the x and y directions and solving for the unknown force. It is important to accurately draw a free-body-diagram and ensure that the sines and cosines are correctly placed in the equations.
  • #1
Ockonal
30
0

Homework Statement


There is inclined, smooth plane whish is sloped with angle 30 degrees. Some objects moves on it. The attraction power is 17 Newtons. Find the force which gives acceleration for the body.


Homework Equations


F = m×a;
F_attraction = m×g;
L = 30⁰;
F_friction = u×N;


The Attempt at a Solution


X: ma = N×cos(L) + F - F_friction
Y: 0 = F_attraction×sin(L) + N

Now I'm "freezed"
What to do?
 
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  • #2
http://i115.photobucket.com/albums/n283/Baryon/General Physics/Inclined_Coordinate_System.jpg

I'm assuming that's an accurate representation of the plane you've described? And that you're making an attempt to keep your coordinate system in that fashion (x-along the incline, y-perpendicular to the incline)?

In the problem, it says you have a "smooth plane," which to me suggests "frictionless."

Try drawing the free-body-diagram to make sure that you have your component vectors correct; that is, make sure your sines and cosines are indeed where they need to be so that you can sum the forces in either direction accurately.
 

Related to Solving Inclined Plane Motion: Find Force for Acceleration

1. How do you calculate the force needed for acceleration on an inclined plane?

To calculate the force needed for acceleration on an inclined plane, you can use the formula F = mgsinθ, where F is the force, m is the mass of the object, g is the acceleration due to gravity, and θ is the angle of the incline. This formula takes into account the weight of the object and the angle of the incline to determine the force needed for acceleration.

2. What is an inclined plane and how does it affect motion?

An inclined plane is a flat surface that is angled or sloped, typically used to make it easier to move objects from one height to another. Inclined planes affect motion by changing the direction and magnitude of the force needed to move an object. Objects on an inclined plane experience a component of their weight as a force parallel to the plane, which can either help or hinder their motion depending on the angle of the incline.

3. How does the mass of an object impact the force needed for acceleration on an inclined plane?

The mass of an object does not directly impact the force needed for acceleration on an inclined plane. However, the weight of the object, which is determined by its mass, does play a role in the calculation of the force needed for acceleration. The greater the mass of the object, the greater its weight and therefore the greater the force needed for acceleration.

4. Are there any other factors that can affect the force needed for acceleration on an inclined plane?

Yes, aside from the weight and angle of the incline, there are a few other factors that can affect the force needed for acceleration on an inclined plane. These include friction between the object and the incline, the shape and size of the object, and the surface of the incline (smooth vs. rough). These factors can either increase or decrease the force needed for acceleration.

5. How can we use the calculations for force and acceleration on an inclined plane in real-life applications?

The calculations for force and acceleration on an inclined plane have many real-life applications. For example, they can be used in designing ramps for wheelchair accessibility, determining the force needed to move heavy objects on a construction site, and understanding the movement of objects on inclined surfaces in sports such as skiing and skateboarding. These calculations also have applications in mechanical engineering and physics for designing and analyzing various machines and structures.

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