Angular acceleration given force, moment arm and inertia?

[joema]

Homework Statement

Find angular acceleration in deg/sec^2 given the following factors:

- Total mass: 4889 kg
- Moment of inertia: 4620 kg*m^2
- Moment arm length from center of mass: 1.5 meters
- Force on moment arm tangent to mass: 1779 Newtons

Homework Equations

torque = force * moment arm length
torque = 1779 Newtons * 1.5 meters
torque = 2668.5 Newton-meters

angular acceleration = torque / moment of inertia

The Attempt at a Solution

angular acceleration = 2668.5 N-m / 4620 kg*m^2

angular acceleration = 0.576 radians/sec^2 = 33.05 degrees/sec^2

Is this right?

 

[voko]

Looks good, except for significant digits.

 

[barryj]

Should be 33, yes? i.e. 2 sig figs

 

[voko]

Yep.

 

[Nickie]

I would say that your solution appears to be correct based on the given information and equations. However, it is important to note that without units, the value for angular acceleration is incomplete. Also, it would be beneficial to explain the significance or meaning of the calculated angular acceleration in the context of the problem. Additionally, it is always a good practice to double check your calculations and units to ensure accuracy.