Finding angle of cable when pendulum is at its highest point

AI Thread Summary
To find the angle of the cable when the pendulum is at its highest point, it's essential to correctly identify the forces acting on the pendulum. The height is crucial for determining the angle, and using the formula Δx = radius times Δθ may be appropriate once the height is established. Kinematic equations could also be considered, depending on the context of the problem. A helpful approach involves drawing the pendulum's string and bob, labeling the length, and applying basic trigonometry to find the angle. Proper visualization and understanding of the forces will aid in solving the problem effectively.
kurispice
Messages
5
Reaction score
0

Homework Statement



Please see attached photo. It is problem 54.
My difficulty is that I am not sure if I marked out the correct forces in the work-force equation. Without the height, I can't find the angle. I was going to use the formula: Δx=radius (times) Δθ
However, I'm not even sure this is the right equation to use once I find the height. Should I use kinematic equations instead?

Homework Equations



Attached photo listing useful information for solving equation.

The Attempt at a Solution



Attached photo, written on notebook paper.

Thanks for your help!
 

Attachments

  • IMAG0351.jpg
    IMAG0351.jpg
    29.7 KB · Views: 531
  • IMAG0352.jpg
    IMAG0352.jpg
    37.8 KB · Views: 540
  • IMAG0353.jpg
    IMAG0353.jpg
    24.9 KB · Views: 507
Physics news on Phys.org
Draw a vertical line which and label it as the length of your pendulum string, and then draw the bob at the angle θ and then just draw a horizontal line through the bob when at the angle θ.

You can use simple trigs to obtain the angle.
 

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

For a Pendulum: Knowing Acceleration Find Maximum Angle
Replies
26
Views
3K
How Do You Mathematically Determine the Highest Point of a Pendulum?
Replies
41
Views
4K
Finding the distance of a peg so that a pendulum can circle around it
Replies
2
Views
882
Physics IA: Distance B/w Pendulum & Alum. Block, Finding Damping Coefficient
Replies
9
Views
2K
Tension and net torque in a cable
Replies
10
Views
5K
Work done on a conical pendulum
Replies
3
Views
2K
Angle that makes kinetic and potential energy of simple pendulum equal
Replies
2
Views
1K
How to find the maximum angle of a pendulum after a mass collides with it
Replies
4
Views
4K
Finding the period of a pendulum in motion along a curve
Replies
8
Views
2K
Calculate tilt angle of a bar lifted via two ropes on fixed points
Replies
7
Views
3K

Hot Threads

Recent Insights

Back
Top