How Do Incline Angle Changes Affect Normal and Friction Forces?

  • Thread starter Thread starter 123lar
  • Start date Start date
AI Thread Summary
As the incline angle θ increases, the normal force acting on the block decreases, while the static friction force increases to counteract the component of gravitational force parallel to the incline. The block remains at rest until the angle reaches a critical point where static friction can no longer hold it in place. For the second question, the net force acting on the stone is calculated by subtracting air resistance from its weight, leading to a net force of 8 N. This results in an acceleration of 8 m/s² when applying Newton's second law. It is important to show work for both problems to facilitate understanding and assistance.
123lar
Messages
6
Reaction score
0
Two questions! PLEASE HELP :)

Homework Statement



A block rests on an incline that makes angle θ with the horizontal. The block remains at rest as θ is slowly increased. What happens to the magnitudes of the normal force and the static friction force of the incline on the block?

A stone of mass 1 kg and weight 10 N falls through the air. The air resistance acting on the stone is 2 N. What is the acceleration of the stone?



Please explain both answers. THANK YOU!
 
Physics news on Phys.org


Please show an attempt at the solution.
 


1. It makes it easier if you have each question in its own thread. This way we all don't have to guess which question each post in the tread is talking about.
2. You haven't shown any work. We can't help you until you show us some work.

Let's concentrate on the first problem. After you've read the forum rules, specifically the ones pertaining to the homework forum, post the second question as a new thread.

What seems to have you stumped?
 
Thread 'Voltmeter readings for this circuit with switches'

Thread 'Voltmeter readings for this circuit with switches'

TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance) My thoughts for the first case , one of them must be 12 volt while the other is 0 The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
View full post »
Thread 'Correct statement about a reservoir with an outlet pipe'

Thread 'Correct statement about a reservoir with an outlet pipe'

The answer to this question is statements (ii) and (iv) are correct. (i) This is FALSE because the speed of water in the tap is greater than speed at the water surface (ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not? (iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
View full post »

Similar threads

Friction direction change in a inclined circular bend (car on a road)
Replies
11
Views
1K
Static equilibrium | Uniform sphere on incline | Determining friction
Replies
43
Views
2K
Finding the work done by a block
Replies
4
Views
3K
Static friction of a block on an incline?
Replies
1
Views
2K
Block at rest on an inclined surface
Replies
36
Views
5K
Net Force acting on block on incline
Replies
1
Views
2K
How Does Friction Affect Acceleration on an Incline?
Replies
19
Views
3K
Find min/max accel. for block to stay on wedge (static fric)
Replies
1
Views
2K
Force pulling on a string at an angle with a block at the other end
Replies
2
Views
1K
Curvilinear Dynamics and forces
Replies
9
Views
2K

Hot Threads

Recent Insights

Back
Top