Frictional Force: Inclined Projectile Returns with Half Speed

In summary, the question asks for the coefficient of kinetic friction when a block is projected up an incline at an angle theta and returns to its initial position with half its initial speed. The work energy theorem can be used to solve this problem.
  • #1
zpt3593
2
0
A block is projected up an incline making an angle theta with the horizontal. It returns to its initial position with half its initial speed.


I have absolutely no idea how to do this problem. I would think i would have to use the equation x = x +v(t) + (1/2)at^2 or maybe the equation x= (v^2) / (2ug)
 
Physics news on Phys.org
  • #2
zpt3593 said:
A block is projected up an incline making an angle theta with the horizontal. It returns to its initial position with half its initial speed.


I have absolutely no idea how to do this problem
Neither do I. What was the actual question?.
 
  • #3
A block is projected up an incline making an angle theta with the horizontal. It returns to its initial position with half its initial speed.

Find the coefficient of kinetic friction.

This was the original question.
 
  • #4
Use the work energy theorem.
 

What is frictional force?

Frictional force is a force that resists the relative motion between two surfaces that are in contact with each other. It is caused by the microscopic irregularities on the surfaces that interact with each other.

What are the types of frictional force?

There are four types of frictional force: static friction, sliding friction, rolling friction, and fluid friction. Static friction occurs when two surfaces are not moving relative to each other, while sliding friction occurs when two surfaces are sliding against each other. Rolling friction occurs when a rolling object encounters resistance from the surface it is rolling on, and fluid friction occurs when an object moves through a fluid, such as air or water.

What factors affect frictional force?

The factors that affect frictional force include the nature of the surfaces in contact, the normal force between the surfaces, and the roughness of the surfaces. Other factors that may affect frictional force include the temperature and the presence of lubricants.

How is frictional force calculated?

The magnitude of frictional force can be calculated using the formula F = μN, where F is the frictional force, μ is the coefficient of friction, and N is the normal force between the surfaces. The coefficient of friction is a constant that depends on the nature of the surfaces in contact.

What are some real-life applications of frictional force?

Frictional force has many real-life applications, such as in transportation, where it is used to slow down or stop vehicles. It is also used in sports, such as in the grip of shoes on a basketball court. In industrial settings, frictional force is used to control the movement of machines and to prevent them from slipping. Additionally, frictional force is important in everyday activities like writing, walking, and tying shoelaces.

Similar threads

  • Introductory Physics Homework Help
Replies
7
Views
264
  • Introductory Physics Homework Help
Replies
4
Views
1K
Replies
24
Views
1K
  • Introductory Physics Homework Help
Replies
6
Views
1K
  • Introductory Physics Homework Help
Replies
29
Views
822
  • Introductory Physics Homework Help
Replies
12
Views
876
  • Introductory Physics Homework Help
Replies
2
Views
624
  • Introductory Physics Homework Help
Replies
2
Views
416
  • Introductory Physics Homework Help
Replies
3
Views
1K
  • Introductory Physics Homework Help
Replies
4
Views
1K
Back
Top