Effects of a Force

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– Understand how forces can impact the size and shape of an object.
– Learn to sketch, plot, and interpret load-extension graphs for elastic solids, including experimental procedures.
– Determine the resultant force of multiple forces acting along the same straight line.
– Recognize that an object remains at rest or moves at a constant speed in a straight line unless acted upon by a resultant force.
– Understand how a resultant force can change an object’s velocity by altering its direction or speed.
– Define spring constant as force per unit extension and utilize the equation k = F/x.
– Define and identify the “limit of proportionality” on a load-extension graph.
– Recall and utilize Newton’s second law (F = ma), understanding that force and acceleration are in the same direction.
– Describe the moment of a force and provide everyday examples of its turning effect.
– Define the moment of a force as moment = force × perpendicular distance from the pivot and apply this equation.
– Apply the principle of moments to situations involving one force on each side of the pivot, including balancing a beam.
– Understand that an object is in equilibrium when there is no resultant force or moment.
– Apply the principle of moments to various situations, including those with multiple forces on each side of the pivot.
– Describe an experiment demonstrating that there is no resultant moment on an object in equilibrium.