# If a rigid body is in equilibrium under the action of three forces, then?

If a rigid body is in equilibrium under the action of three forces, then?

If a rigid body is in equilibrium under the action of three forces, then the lines of action of these forces meet in a point, the lines of action of these forces are parallel.

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Last Answer : A heavy ladder resting on floor and against a vertical wall may not be in equilibrium, if the floor and wall both are smooth surfaces.

Description : If a rigid body is in equilibrium under the action of three forces, then  (A) These forces are equal  (B) The lines of action of these forces meet in a point  (C) The lines of action of these forces are parallel  (D) Both (B) and (C) above

Last Answer : (D) Both (B) and (C) above

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Last Answer : If a suspended body is struck at the center of percussion, then the pressure on die axis passing through the point of suspension will be zero.

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Last Answer : The weight of a body is due to gravitational force of attraction towards the center of the earth.

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Last Answer : A force acting on a body may introduce internal stresses, balance the other forces acting on it, retard its motion, change its motion.

Description : A rigid body is in equilibrium under the action of these forces when a.These forces are equal b.The lines of action of these forces are parallel c.The lines of action of these forces meet in a point d.(A) and (B) above e.(B) and (C) above

Last Answer : e. (B) and (C) above

Description : If three forces acting in one plane upon a rigid body, keep it in equilibrium, then they must either (A) Meet in a point (B) Be all parallel (C) At least two of them must meet (D) All the above are correct

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Description : A number of forces acting at a point will be in equilibrium if?

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Description : The forces, which meet at one point, but their lines of action do not lie in a plane, are called?

Last Answer : The forces, which meet at one point, but their lines of action do not lie in a plane, are called non-coplanar concurrent forces.

Description : Forces are called concurrent when their lines of action meet in?

Last Answer : Forces are called concurrent when their lines of action meet in one point.

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