Is a ball in equilibrium at its highest point?
1 Expert Answer Once the ball leaves the person’s hand, it is never in equilibrium until it lands on the ground or the person catches it again. In particular, it is definitely not in equilibrium when it reaches the top of its path, where the velocity is momentarily zero.
Which is always true for a body in equilibrium?
A body is in equilibrium only when there is no net external force acting on it. So, in other words, the sum of all forces acting on it must be zero for a body to be in equilibrium.
What are the 3 types of equilibrium?
There are three types of equilibrium: stable, unstable, and neutral. Figures throughout this module illustrate various examples. Figure 1 presents a balanced system, such as the toy doll on the man’s hand, which has its center of gravity (cg) directly over the pivot, so that the torque of the total weight is zero.
What are the two conditions for equilibrium?
Conditions for equilibrium require that the sum of all external forces acting on the body is zero (first condition of equilibrium), and the sum of all external torques from external forces is zero (second condition of equilibrium). These two conditions must be simultaneously satisfied in equilibrium.
What is equilibrium and its conditions?
There are two conditions that must be met for an object to be in equilibrium. The first condition is that the net force on the object must be zero for the object to be in equilibrium. If net force is zero, then net force along any direction is zero.
How do you know if a rod is in equilibrium?
For an object to remain in equilibrium, two conditions must be satisfied – both the net force and the net torque must be equal to zero. An example of an object in equilibrium is a rod that is free to rotate about a hinge at one end.
How do you know when something is in equilibrium?
Q can be used to determine which direction a reaction will shift to reach equilibrium. If K > Q, a reaction will proceed forward, converting reactants into products. If K < Q, the reaction will proceed in the reverse direction, converting products into reactants. If Q = K then the system is already at equilibrium.
How can you tell if an object is in static equilibrium?
An object is in static equilibrium if and only if: The sum of the forces on it in each direction is zero. The sum of the torques on it in each direction is zero. Its linear momentum is zero (i.e. it’s not moving).
Why does the equilibrium constant change with temperature?
Changing temperature Increasing the temperature decreases the value of the equilibrium constant. Where the forward reaction is endothermic, increasing the temperature increases the value of the equilibrium constant. The position of equilibrium also changes if you change the temperature.
What is the importance of equilibrium constant?
The equilibrium constant can help us understand whether the reaction tends to have a higher concentration of products or reactants at equilibrium.
What is the meaning of rate constant?
The rate constant, or the specific rate constant, is the proportionality constant in the equation that expresses the relationship between the rate of a chemical reaction and the concentrations of the reacting substances.
What is the relation between rate and rate constant?
A rate law is an expression showing the relationship of the reaction rate to the concentrations of each reactant. The specific rate constant (k) is the proportionality constant relating the rate of the reaction to the concentrations of reactants.
What is the specific rate of reaction?
Specific Rate of Reaction or Rate Constant is the rate of reaction when the molar concentration of each of the reactants is unity.
What is the relation between rate constant and half-life period of a first-order reaction?
The half-life of a reaction is the time required for the reactant concentration to decrease to one-half its initial value. The half-life of a first-order reaction is a constant that is related to the rate constant for the reaction: t1/2 = 0.693/k. Radioactive decay reactions are first-order reactions.
What is the order of the reaction?
The order of reaction can be defined as the power dependence of rate on the concentration of all reactants. For example, the rate of a first-order reaction is dependent solely on the concentration of one species in the reaction.
What is the order of reaction with respect to ClO2?
Therefore, the order of ClO2 C l O 2 is 2 and the order of OH− molecule is 1.
What does it mean when a reaction is second order?
: a chemical reaction in which the rate of reaction is proportional to the concentration of each of two reacting molecules — compare order of a reaction.
What is an example of a second order reaction?
A second kind of second-order reaction has a reaction rate that is proportional to the product of the concentrations of two reactants. An example of the former is a dimerization reaction, in which two smaller molecules, each called a monomer, combine to form a larger molecule (a dimer).
What are the characteristics of second order reaction?
A) The rate of the reaction is not proportional to the concentration of the reactant. B) The rate of the reaction is directly proportional to the square of the concentration of the reactant. C) The rate of the reaction is directly proportional to the square root of the concentration of the reactant.
How do you know if a reaction is second order?
Determine the reaction order and the rate constant. If a plot of reactant concentration versus time is not linear but a plot of 1/reaction concentration versus time is linear, then the reaction is second order.