Inertial Frame of Reference – Rankers Physics

Pseudo Force: Practice Problem & Solution

Assertion (A): A reference frame attached to the earth is an inertial frame of reference. Reason (R): In practical, Newton's laws can be applied in a frame of reference. Which is attached to the earth.  
(1) Both (A) & (R) are true and the (R) is the correct explanation of the (A)
(2) Both (A) & (R) are true but the (R) is not the correct explanation of the (A)
(3) (A) is true but (R) is false
(4) Both (A) and (R) are false

Short Solution (Best for NEET):

To solve this problem, we apply the core principles of Pseudo Force. Understanding the underlying formula is key to arriving at the correct answer below:

Assertion (A) is false. The Earth rotates and revolves, making a frame attached to it non-inertial. Reason (R) is false. Newton's laws in their original form are only valid in inertial frames. For a frame attached to the Earth, pseudo forces must be introduced to apply Newton's laws. Thus, both the Assertion and the Reason are false.

Leave a Reply

Your email address will not be published. Required fields are marked *

Similar Practice Questions

Explore conceptually related problems to test your knowledge.

1. A body in equilibrium will not have :
2. For a rocket propulsion velocity of exhaust gases relative to rocket is \( 2 \text{ km/s} \). If mass of rocket system is \( 1000 \text{ kg} \), then the rate of fuel consumption for a rocket to rise up with acceleration \( 4.9 \text{ m/s}^2 \) will be: (1998)
3. Assertion (A): A block is lying at rest on horizontal rough surface. A person moving with acceleration \(a\) in forward direction will observe a friction force acting on the block. Reason (R): When there is relative motion between the two surface then only static friction acts between them.  
4. Match entries in Column-I with entries in Column-II and choose the correct option. \(\begin{array}{|l|l|} \hline \text{Column-I} & \text{Column-II} \\[0.5ex] \hline \text{A. Limiting friction} & \text{P. Has magnitude } \mu_k N \\[0.5ex] \text{B. Static friction} & \text{Q. Maximum value of static friction} \\[0.5ex] \text{C. Kinetic friction} & \text{R. Is a self adjusting force} \\[0.5ex] \hline \end{array}\)
5. Assertion (A): According to Newton's third law of motion, action and reaction forces are equal in magnitude and opposite in direction. Reason (R): Net force on a body due to action-reaction pair is always equal to zero.