Mechanical effects refer to the changes that occur in materials or systems due to the application of force or motion. These effects can include deformation, vibration, and stress, which are essential concepts in fields like engineering and physics. Understanding mechanical effects helps in designing structures and machines that can withstand various forces without failing. Common examples of mechanical effects include the bending of a beam under weight, the vibration of a string when plucked, and the compression of a spring when a load is applied. These effects are crucial for ensuring the safety and functionality of everyday objects, from bridges to vehicles.