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Torque is related to angular acceleration by:
টর্ক এবং কৌণিক ত্বরণের মধ্যে সম্পর্ক হলো:
Practice MCQ for SSC, UPSC, RRB Exams
A. \(\tau=I\omega\)
A. \(\tau=I\omega\)
B. \(\tau=I\alpha\)
B. \(\tau=I\alpha\)
C. \(\tau=m\alpha\)
C. \(\tau=m\alpha\)
D. \(\tau=I\theta\)
D. \(\tau=I\theta\)
Correct Answer: B
সঠিক উত্তর: B
Explanation
ব্যাখ্যা
The rotational analogue of Newton's Second Law is:
\(\tau=I\alpha\)
Where:
\(\tau\) = Torque
\(I\) = Moment of Inertia
\(\alpha\) = Angular Acceleration
This equation shows that torque is directly proportional to angular acceleration.
For a given moment of inertia:
\(\tau\propto\alpha\)
A larger torque produces a greater angular acceleration.
The SI unit of torque is:
\(N\,m\)
The SI unit of angular acceleration is:
\(rad/s^2\)
Important:
Linear motion: \(F=ma\)
Rotational motion: \(\tau=I\alpha\)
Therefore, the correct relation is:
\(\tau=I\alpha\)
নিউটনের দ্বিতীয় সূত্রের ঘূর্ণনগত সমতুল্য রূপ হলো:
\(\tau=I\alpha\)
যেখানে:
\(\tau\) = টর্ক
\(I\) = জড়তার ভ্রামক (Moment of Inertia)
\(\alpha\) = কৌণিক ত্বরণ
এই সমীকরণ থেকে বোঝা যায় যে টর্ক কৌণিক ত্বরণের সমানুপাতিক।
জড়তার ভ্রামক ধ্রুব হলে:
\(\tau\propto\alpha\)
টর্ক যত বেশি হবে, কৌণিক ত্বরণও তত বেশি হবে।
টর্কের SI একক:
\(N\,m\)
কৌণিক ত্বরণের SI একক:
\(rad/s^2\)
গুরুত্বপূর্ণ:
সরলরৈখিক গতি: \(F=ma\)
ঘূর্ণন গতি: \(\tau=I\alpha\)
অতএব, সঠিক সম্পর্ক হলো:
\(\tau=I\alpha\)
Related Questions
সম্পর্কিত প্রশ্ন
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