Calculating Angular Acceleration of a Shaft

In summary, the conversation discusses the determination of angular acceleration for a rotating shaft. It is mentioned that the angular acceleration can be calculated using the formula (w^2*r), where w is the angular velocity and r is the radius. It is also suggested that if the RPM is constant, the angular acceleration will be zero. However, there is some confusion about whether the problem may actually be referring to centripetal acceleration.
  • #1
elmariachi
6
0
I have a shaft with radius "r" running at a certain RPM. how can i determine the angular acceleration of the shaft. Do i need any other parameters as well? Can i say that the angular acceleration can be (w^2*r), w is the angular velocity, r being the radius.

thanks
 
Physics news on Phys.org
  • #2
is the "certain RPM" a constant? If so, change in angular velocity of time has to be zero.
 
  • #3
HungryChemist said:
is the "certain RPM" a constant? If so, change in angular velocity of time has to be zero.

In fact, any time an RPM is given it is meant that the rotatory motion is uniform, i.e. the angular velocity is a constant and , therefore, the angular acceleration is zero. Perhaps the problem meant to ask the centripetal acceleration?

J
 

Related to Calculating Angular Acceleration of a Shaft

What is angular acceleration?

Angular acceleration is the rate of change of angular velocity, which is the rotational speed of a rotating object. It is measured in radians per second squared (rad/s²).

How is angular acceleration calculated?

Angular acceleration can be calculated by taking the change in angular velocity over a certain time period and dividing it by that time period. This can be represented by the formula: α = (ω₂ - ω₁) / (t₂ - t₁), where α is the angular acceleration, ω is the angular velocity, and t is the time.

What is the unit of measurement for angular acceleration?

The unit of measurement for angular acceleration is radians per second squared (rad/s²). However, it can also be expressed in degrees per second squared (deg/s²) or revolutions per second squared (rev/s²).

What factors affect the angular acceleration of a shaft?

The angular acceleration of a shaft can be affected by several factors, including the torque applied to the shaft, the moment of inertia of the shaft, and any external forces acting on the shaft. Friction and air resistance can also affect the angular acceleration.

Why is calculating angular acceleration important?

Calculating angular acceleration is important in understanding the motion of rotating objects and in designing and analyzing mechanical systems that involve rotational motion. It is also used in fields such as physics, engineering, and astronomy to study the behavior and properties of rotating objects.

Similar threads

  • Introductory Physics Homework Help
Replies
3
Views
815
  • Introductory Physics Homework Help
Replies
8
Views
1K
  • Introductory Physics Homework Help
Replies
32
Views
1K
  • Introductory Physics Homework Help
Replies
30
Views
2K
  • Introductory Physics Homework Help
10
Replies
335
Views
8K
  • Introductory Physics Homework Help
Replies
6
Views
1K
  • Introductory Physics Homework Help
Replies
33
Views
2K
  • Introductory Physics Homework Help
Replies
18
Views
4K
  • Introductory Physics Homework Help
Replies
17
Views
137
  • Introductory Physics Homework Help
Replies
17
Views
2K
Back
Top