Conditions for Mechanical Equilibrium – Rankers Physics

Equilibrium based Questions: Practice Problem & Solution

A body is said to be in mechanical equilibrium if
The net force on the body is zero
The net torque on the body is zero
Both net force and net torque on the body is zero
The centre of mass of the body is at rest

Solution Explained:

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

For complete mechanical equilibrium, a body must be in both translational equilibrium (net external force is zero) and rotational equilibrium (net external torque is zero).

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Your email address will not be published.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. On the horizontal surface of a truck a block of mass \(1\text{ kg}\) is placed \((\mu = 0.6)\) and truck is moving with acceleration \(5\text{ m/s}^2\) then the frictional force on block will be: (2001)
2. If a cloth covers a table and some dishes are kept on it, then the cloth can be pulled out without dislodging the dishes from the table by pulling the cloth suddenly. The dishes will remain on table due to
3. A body of weight  W1 is suspended from the ceiling of a room through a chain of weight W2. The ceiling pulls the chain by a force
4. Assertion (A): A particle on earth found to be at rest when seen from a frame \(U_1\) and moving with a constant velocity when seen from another frame \(U_2\). Then both frames may be non-inertial. Reason (R): A reference frame attached to the earth must be an inertial frame.  
5. Assertion (A): A block of weight \(10 \text{ N}\) is pushed against a vertical wall by a horizontal force of \(15 \text{ N}\). The coefficient of friction between the wall and the block is \(0.6\). Then the magnitude of maximum frictional force is \(9 \text{ N}\). Reason (R): For given system block will remain stationary.