Question

To verify the second condition condition of equilibrium using a suspended meter rod

Answer 1

Answer:

An object in equilibrium does not move along a straight line -- it does not translate -- that means the sum of all the forces on it is zero. That was the first condition of equilibrium.

But an object in equilibrium also does not rotate. That means the sum of all the rotational forces on it is also zero. The sum of all the torques on an object is equilibrium is zero. This is the Second Condition of Equilibrium.

Tor ques that would rotate an object counter clockwise may be taken as positive and torques that would rotate an objectclockwise may be taken as negative. Then we can write this Second Condition of Equilibrium as

or we can calculate the sum of the clockwise torques and set them equal to the sum of the counterclockwise torques. Then we can write this Second Condition of Equilibrium as

Explanation:

Answer 2

Answer:

Two conditions of equilibrium must be satisfied to ensure that an object remains in static equilibrium. Firstly, the net force acting upon the object must be zero. Secondly, the net torque acting upon the object must also be zero. In other words, both static translational and static rotational equilibrium conditions must be satisfied.

Explanation:

A body at rest or in uniform motion is in equilibrium if the resultant force acting on it is zero. For a body in equilibrium, it must satisfy certain conditions. There are two conditions for a body to be in equilibrium.

First condition of equilibrium

A body is said to satisfy the first condition for equilibrium if the resultant of all the forces acting on it is zero. Let n number of forces  F1, F2, F3,……, Fn is acting on a body such that:

F1 +F2+F3+……+Fn =0

or ∑ F =0 ……(1)

The symbol ∑ is a Greek letter called sigma used for summation. Equation (1) is called the first condition of equilibrium.

The first condition for equilibrium can also be stated in terms of X and Y components of the forces acting  on the body as:

F1x +F2x+F3x+……+Fnx =0

And

F1y+F2y+F3y+……+Fny=0

or

∑ Fx =0

∑ Fy=0

First condition of equilibrium examples

• A book lying on a table
• A picture hanging on a wall, are at rest and thus satisfies the first condition for equilibrium.
• A paratrooper coming down with terminal velocity also satisfies the first condition for equilibrium and is thus in equilibrium.

Second condition of equilibrium

If the body is not in equilibrium although the first condition for equilibrium is still satisfied. It is because the body has the tendency to rotate. This situation demands another condition in addition to the first condition for equilibrium. According to this, a body satisfies the second condition for equilibrium when the resultant torque acting on it is zero. Mathematically:

∑ τ =0

Second condition of equilibrium examples

• The force applying on the steering of the car
• Couple
• Children playing on the sea saw

Reference Link

• https://brainly.in/question/34424224
• https://brainly.in/question/12559110