Height of Pendulum Homework: A&B Answered, C&D Yet to Solve

  • Thread starter Thread starter Taylor22
  • Start date Start date
  • Tags Tags
    Height Pendulum
AI Thread Summary
The discussion revolves around a physics homework problem involving two spheres with different masses and initial heights, focusing on elastic collisions. The user successfully solved for the heights reached by sphere 1 and sphere 2 after the first collision but is struggling with the calculations for the second collision. Key equations mentioned include those for velocity and height after elastic collisions. The lack of a visual reference for the arrangement of the spheres is noted as a potential barrier to understanding the problem fully. The conversation emphasizes the need for clarity in the setup to solve for the heights after subsequent collisions.
Taylor22
Messages
1
Reaction score
0

Homework Statement


In the two-sphere arrangement of Figure, assume that sphere 1 has a mass of 51 g and an initial height of 10 cm, and that sphere 2 has a mass of 82 g. After sphere 1 is released and collides elastically with sphere 2, what height is reached by (a) sphere 1 and (b) sphere 2? After the next (elastic) collision, what height is reached by (c) sphere 1 and (d) sphere 2?

I found A and B but not sure how to find c and d?

Homework Equations

The Attempt at a Solution



Sqrt(2gh)= v

((m1-m2)/(m1+m2))v=v1
(v1^2)/(2g)=H1

[/B]
 
Physics news on Phys.org
Since you have not attached the figure, you will need to describe the arrangement.
 

Thread 'Errors and significant figures'

I multiplied the values first without the error limit. Got 19.38. rounded it off to 2 significant figures since the given data has 2 significant figures. So = 19. For error I used the above formula. It comes out about 1.48. Now my question is. Should I write the answer as 19±1.5 (rounding 1.48 to 2 significant figures) OR should I write it as 19±1. So in short, should the error have same number of significant figures as the mean value or should it have the same number of decimal places as...
View full post »
Thread 'A cylinder connected to a hanging mass'

Thread 'A cylinder connected to a hanging mass'

Let's declare that for the cylinder, mass = M = 10 kg Radius = R = 4 m For the wall and the floor, Friction coeff = ##\mu## = 0.5 For the hanging mass, mass = m = 11 kg First, we divide the force according to their respective plane (x and y thing, correct me if I'm wrong) and according to which, cylinder or the hanging mass, they're working on. Force on the hanging mass $$mg - T = ma$$ Force(Cylinder) on y $$N_f + f_w - Mg = 0$$ Force(Cylinder) on x $$T + f_f - N_w = Ma$$ There's also...
View full post »

Similar threads

Finding the distance of a peg so that a pendulum can circle around it
Replies
2
Views
879
Find the height of a lamp based on the velocities of projectiles
Replies
40
Views
2K
Moving Down a Ramp: Answers & Explanations
Replies
8
Views
2K
What Is the Effect of Friction on the Height of a Sphere Rolling Down a Ramp?
Replies
2
Views
2K
I need opinions on a Projectile Motion problem that I made up
Replies
11
Views
2K
What Is the Maximum Height Achieved by Mass M1 After Elastic Collision?
Replies
3
Views
2K
What Happens to Sphere Velocities After an Elastic Collision?
Replies
1
Views
4K
Two sphere collision -- What's the speed?
Replies
6
Views
3K
Find the height the block rises to after an elastic collision
Replies
7
Views
5K
Catching a loaf of bread thrown vertically at a window
Replies
25
Views
1K

Hot Threads

Recent Insights

Back
Top