Mechanical Engineering - Engineering Mechanics - Discussion

Discussion Forum : Engineering Mechanics - Section 1 (Q.No. 15)
15.
The unit of angular acceleration is
N-m
m/s
m/s2
rad/s2
Answer: Option
Explanation:
No answer description is available. Let's discuss.
Discussion:
11 comments Page 1 of 2.

B.Lavanya said:   4 years ago
Angular acceleration = angular/time = w/t.

The unit of angular acceleration = (rad/s)÷s = rad/S2.

Manjunath said:   5 years ago
What's radian can anyone explain it?

Ravi vattipalli said:   6 years ago
Angular velocity is rad/sec.

Shubham Pawar said:   7 years ago
Angular acceleration = rate of change of angular velocity.
Hence angular acceleration = angular velocity/time.
As angular velocity = rad/sec and time= sec.

Therefore angular acceleration= (rad/sec)/sec.
= Rad/(sec*sec),
= Rad/sec^2.
(1)

Kalyan yadav said:   7 years ago
Angular velocity is rad/sec.

MAHMOOD AHMAD said:   8 years ago
Angular velocity = rad/sec.

Angular acceleration = angular velocity/sec =rad/sec/sec.
= rad/sec^2.
(1)

Lavpreet Singh said:   9 years ago
What is sprocket ratio and how to find it?

Dileepkumar said:   1 decade ago
Angular velocity = rad/sec;
Angular acceleration = angular velocity/sec = rad/sec^2.

A.sindhuja said:   1 decade ago
Acceleration is taken in terms of linear displacement, acceleration=velocity/time velocity is displacement/time hence units of velocity is m/sec therefore units for acceleration is m/sec^2. Angular acceleration is in terms of angular displacement, in SI system the units of angular displacement is Radians hence units of angular acceleration is Rad/sec^2.
(6)

Anil kumar Dhaked said:   1 decade ago
Angular acceleration=angular velocity/Time.

But unit of angular velocity is rad./sec. Or
Unit of time is. Sec.

So unit of angular acceleration is rad./sec.*sec
= rad./sec^2.
(1)


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