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प्रश्न
What is a couple?
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उत्तर
Two equal parallel and opposite forces acting on a rigid body at different points constitute a couple. The distance 'd' is called the arm of the couple.
संबंधित प्रश्न
State the condition when a body is in dynamic 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
State two conditions for a body acted upon by several forces to be in equilibrium.
A meter scale is pivoted at its mid point and a 50 g mass suspended from the 20 cm mark. What mass balances the ruler when suspended from 65 cm mark?
Give scientific reason for the following:
When a man climbs a slope he bends forward.
Give scientific reason for the following:
While climbing a hill you will try to bend your body forward.
Give scientific reason for the following:
In a moving bus the standing passenger stands keeping both his legs apart.
What makes a balance faulty?
What do you mean by dynamic and static equilibrium? Give one example of each.
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.
