Learning Physics 014 & 015: Find Acceleration

  • Thread starter Thread starter anglum
  • Start date Start date
AI Thread Summary
The discussion focuses on calculating tangential and total acceleration for a point on a rotating turntable. The point starts from rest and reaches a speed of 0.958 m/s in 1.95 seconds, with the radius being 0.131 m. Participants discuss the formulas for tangential acceleration and centripetal acceleration, emphasizing the need to determine the speed at t1 = 1.6 s to apply these formulas effectively. There is a recognition of the constant rate of change in speed during the time interval. The conversation highlights the learning process involved in understanding these physics concepts.
anglum
Messages
275
Reaction score
0
014 (part 1 of 2) 10 points
The speed of a point on a rotating turntable,
which is 0.131 m from the center, changes at a
constant rate from rest to 0.958 m/s in 1.95 s.
At t1 = 1.6 s, find the magnitude of the
tangential acceleration. Answer in units of
m/s2.
015 (part 2 of 2) 10 points
At t1 = 1.6 s, ¯find the magnitude of the total
acceleration of the point. Answer in units of
m/s2.
 
Physics news on Phys.org
i know the formulas ... .

v = 2pi r/t

centripital acceleration = v2/r

not sure if they help me on this one tho
 
changes at a constant rate from rest to 0.958 m/s in 1.95 s.
At t1 = 1.6 s, find the magnitude of the tangential acceleration.

So the rate is constant during the 1.95 s and one needs to find speed at 1.6 s and from this v2/r.
 
really? wow. I am just learning too... lol
 

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

Is My Calculation of Centripetal Acceleration and Tangential Velocity Correct?
Replies
12
Views
1K
with this tension problem -- Mass on an accelerating cable
Replies
3
Views
2K
Show that the radius of the exoplanet is about 1/2 of Earth’s radius
Replies
2
Views
758
Angular Momentum Problem: Mouse walking on a rotating turntable
Replies
5
Views
1K
Determining displacement and acceleration: A physics problem
Replies
14
Views
2K
2-D Kinematic Velocity and Acceleration Practice Problem
Replies
2
Views
2K
Help with question on motion: Avoiding a rear-end collision
Replies
6
Views
3K
Instantaneous acceleration from Velocity-time graph
Replies
5
Views
3K
When Will the Car Overtake the Truck?
Replies
2
Views
1K
Magnitude of the resultant acceleration
Replies
9
Views
10K

Hot Threads

Recent Insights

Back
Top