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Correct Answer : Option (C) : Concurrent
Explanation : The concurrent forces are those that are in contact with the rotation axis in some way. If any of the forces are in contact with that axis, they are either ignored or inadequate to create a rotation. When a force is contemporaneous, its perpendicular distance from an axis line is 0, implying that there is no rotation. An instant, as we all know, causes rotation.
Correct Answer : Incorrect
Explanation : Coefficient of restitution for elastic bodies is 0 - 1.Coefficient of restitution for perfect elastic bodies is 1.
Correct Answer : Square-threaded
Explanation : In the machines, square threaded screws are employed. Because screws are commonly employed as fasteners. The fundamental benefit of screws is that the friction aids in the structure’s retention. Screws also aid in the fast and efficient joining of the structure.
Correct Answer : Agree
