The angular acceleration of a body, moving along the circumference of a circle, is:
1. along the axis of rotation
2. along the radius, away from centre
3. along the radius towards the centre
4. along the tangent to its position
Subtopic:  Rotational Motion: Kinematics |
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

A constant torque of \(100\) N-m turns a wheel of moment of inertia \(300\) kg-m2 about an axis passing through its centre. Starting from rest, its angular velocity after \(3\) s is: 
1. \(1\) rad/s 
2. \(5\) rad/s
3. \(10\) rad/s
4. \(15\) rad/s
Subtopic:  Rotational Motion: Kinematics |
 83%
From NCERT
NEET - 2023
Please attempt this question first.
Hints
Please attempt this question first.

The angular speed of a flywheel moving with uniform angular acceleration changes from \(1200\) rpm to \(3120\) rpm in \(16\) s. The angular acceleration in rad/s² is:
1. \(104 \pi\)
2. \(2\pi\)
3. \(4\pi\)
4. \(12\pi\)
Subtopic:  Rotational Motion: Kinematics |
 74%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The angular speed of the wheel of a vehicle is increased from \(360~\text{rpm}\) to \(1200~\text{rpm}\) in \(14\) seconds. Its angular acceleration will be:

1. \(2\pi ~\text{rad/s}^2\) 2. \(28\pi ~\text{rad/s}^2\)
3. \(120\pi ~\text{rad/s}^2\) 4. \(1 ~\text{rad/s}^2\)

Subtopic:  Rotational Motion: Kinematics |
 69%
From NCERT
NEET - 2020
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A particle starting from rest moves in a circle of radius \(r\). It attains a velocity of \(v_0~\text{m/s}\) on completion of \(n\) rounds. Its angular acceleration will be:

1. \( \frac{v_0}{n} ~\text{rad} / \text{s}^2\) 2. \( \frac{v_0^2}{2 \pi {nr}^2}~ \text{rad} / \text{s}^2 \)
3. \( \frac{v_o^2}{4 \pi {n}{r}^2}~ \text{rad} / \text{s}^2 \) 4. \( \frac{v_0^2}{4 \pi {nr}} ~\text{rad} / \text{s}^2 \)

Subtopic:  Rotational Motion: Kinematics |
 51%
From NCERT
NEET - 2019
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh