Troubleshooting a Physics Calculation: Identifying the Problem

AI Thread Summary
The discussion revolves around a physics calculation involving a mass sliding inside a hoop and determining the force exerted on the hoop at a specific angle. The user is trying to find the difference between the gravitational force component and the centripetal force, using energy conservation to find the speed at that angle. Despite confidence in the calculations, the user is getting incorrect results and questions whether the problem is misunderstood. Other participants suggest that sharing the calculations could clarify the issue. The conversation emphasizes the importance of correctly interpreting the problem and verifying calculations.
zhenyazh
Messages
55
Reaction score
0
hi,
could some one please explain where i am wrong?

A mass M of 5.80E-1 kg slides inside a hoop of radius R=1.50 m with negligible friction. When M is at the top, it has a speed of 4.43 m/s. Calculate the size of the force with which the M pushes on the hoop when M is at an angle of 46.0°.

i guess what i need to find is the difference between the perpendicular to the hoop component of mg and the centr. force. the centr. force needs the v in that point
which i can find using energy conservation.
i get the wrong answer. i think i am not wrong calculating. maybe what i am asked is not
what i end up calculating

thanks
 
Physics news on Phys.org
I do not see a problem with your solution here. Showing the calculations helps to help you.
 

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

Question about springs and rotational/translational energy
Replies
4
Views
1K
Troubleshooting Interplanetary Cruise Calculations
Replies
41
Views
5K
How to calculate the force exerted by the "tendon" on the "tibia" bone?
Replies
4
Views
950
Moment of inertia problem involving a cylinder rolling down an incline
Replies
11
Views
2K
Dynamic reaction versus Coriolis acceleration of the disk
Replies
1
Views
2K
Finding max velocity for a kart on a circular, banked track
Replies
2
Views
2K
Molecular speed distribution - most probable speed V
Replies
13
Views
1K
Two spring-coupled masses in an electric field (one of the masses is charged)
Replies
1
Views
860
Measuring Acceleration on a Bike using Phyphox
Replies
33
Views
2K
Equilibrium of Forces and Torques on Sawhorses Supporting a Person on a Board
Replies
6
Views
2K

Hot Threads

Recent Insights

Back
Top