Projectile motion-range calculation

Click For Summary

Homework Help Overview

The problem involves projectile motion, specifically calculating the distance a stone will travel when thrown from an inclined surface at a certain angle and speed. The context includes the stone's launch angle relative to the vertical and the incline of the hill.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the initial conditions of the problem, including the launch angle and speed. There are attempts to resolve the launch velocity into vertical and horizontal components. Questions arise about how to start calculations and the need for a labeled diagram.

Discussion Status

The discussion is ongoing, with participants sharing their attempts and expressing confusion about certain aspects of the problem. Some guidance has been offered regarding the resolution of velocity components and the importance of a diagram, but no consensus has been reached on a clear path forward.

Contextual Notes

There is mention of missing numerical data, which may complicate the calculations. Participants also note confusion regarding the projectile's range and its relation to the incline.

Apleo
Messages
9
Reaction score
0
Warning! Posting template must be used for homework questions. Effort must be shown in the Attempt at a Solution.
1. the surface of a hill is inclined at α to horizontal,a stone is thrown from the top of the hill at initial speed u at angle β with vertical line. How far from the top will the stone strike the ground?

2. R=(u^2 sin2θ)\g or by rotational co ordinate geometry3. can't prove that the dist covered by the stone is 2(u^2 sinβcos(α-β))\gcos^2 α
 
Physics news on Phys.org
How did you go about trying to solve this? Where is your labelled diagram ?

The provided answer is correct, it's the distance measured along the sloping ground
 
Last edited:
shall i send you a labelled diagram
 
How shall i start the calculation?
 
Apleo said:
shall i send you a labelled diagram
Attach a jpeg to your forum post.
 
the curve of projectile is not perfect...if you cannot understand please ask! AND sorry for late reply!
 

Attachments

  • Projectile motion.jpg
    Projectile motion.jpg
    10.6 KB · Views: 320
The launch velocity can be shown resolved into 2 components.

The time taken to cover distance CB can be established.
 
i had tried but got stuck!
 
Apleo said:
i had tried but got stuck!
Show the working of your attempt.
 
  • #10
i had got confused with it because the projectile had exceeded its range so i can't solve it , i just checked mine calculation its wrong so suggest me how to start!
 
  • #11
It has to be worked using algebra, as no numerical data is provided.

Can you resolve the launch velocity into vert and horiz components?

Using your diagram, CB is the horizontal distance the projectile travels, because after traveling for that time & distance it hits terrain.
 
  • #12
yes i had resolved it into vert & hoz components...but after that what should i do?
 
  • #13
"
Apleo said:
yes i had resolved it into vert & hoz components...
Well, what is your answer---how do you express the components of its initial velocity?
 
Last edited:

Similar threads

  • · Replies 7 ·
Replies
7
Views
4K
  • · Replies 24 ·
Replies
24
Views
2K
  • · Replies 1 ·
Replies
1
Views
2K
  • · Replies 3 ·
Replies
3
Views
3K
  • · Replies 3 ·
Replies
3
Views
4K
  • · Replies 14 ·
Replies
14
Views
3K
  • · Replies 7 ·
Replies
7
Views
5K
Replies
1
Views
2K
  • · Replies 15 ·
Replies
15
Views
27K
  • · Replies 3 ·
Replies
3
Views
2K