Advertisements
Advertisements
Questions
State the condition when a body is in dynamic equilibrium.
State the condition when a body is in dynamic equilibrium. Give one example.
Advertisements
Solution
A body is in dynamic equilibrium when it remains in its state of uniform motion (constant linear or rotational speed) under the influence of several acting forces. The net external force and net torque acting on it must be zero.
Example: An airplane flying at a constant speed and altitude.
RELATED QUESTIONS
In a beam balance, when the beam is balanced in a horizontal position, it is in ______ equilibrium.
What do you mean by an equilibrium of a body?
State two conditions for a body acted upon by several forces to be in equilibrium.
State the principle of moments. A meter scale is pivoted at 30 cm mark and it is in equilibrium when a mass of 40 g is suspended from 10 cm mark. Calculate the mass of the ruler.
What makes a balance faulty?
In figure, a uniform bar of length l m is supported at its ends and loaded by a weight W kgf at its middle. In equilibrium, find the reactions R1 and R2 at the ends.
`["Hint:" "In equilibrium" "R"_1 + "R"_2 = "W" "and" "R"_1 xx l/2 = "R"_2 xx l/2]`
Explain why It is easier to knock down a boy who is standing on one foot than one who is standing on two.
What is meant by equilibrium?
Explain the types of stability with suitable examples.
Give one example of static equilibrium.
