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प्रश्न
State two condition for a body acted upon by several forces to be in equilibrium.
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उत्तर
For a body to be in equilibrium:
1) The resultant of all the forces acting on the body should be equal to zero.
2) The resultant moment of all the forces acting on the body about the point of rotation should be zero.
संबंधित प्रश्न
In a beam balance, when the beam is balanced in a horizontal position, it is in ______ equilibrium.
A uniform meter scale is in equilibrium as shown in the diagram :
(i) Calculate the weight of the meter scale.
(ii) Which of the following options is correct to keep the ruler in equilibrium when 40 gf wt is shifted to 0 cm mark ?
F is shifted towards 0 cm
or
F is shifted towards 100 cm
What do you mean by the state of equilibrium? What are the conditions for stable equilibrium?
Give scientific reason for the following:
While climbing a hill you will try to bend your body forward.
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]`
What is the weight of a body placed at the centre of the earth?
A ball is placed on a compressed spring. When the spring is released, the ball is observed to fly away.
(i) What form of energy does the compressed spring possess?
(ii) Why does the ball fly away?
Mention any two conditions for the stability of a body?
When a stone tied to a string is rotated in a horizontal plane, the tension in the string provides ______ force necessary for circular motion.
A non uniform beam of weight 120 N pivoted at one end is shown in the diagram below. Calculate the value of F to keep the beam in equilibrium.
