Consider the case in which the object is between the lens and the focal point. trace the p ray (use the label p1 for the segment of the p ray on the same side as the object and p2 for the segment on the opposite side) and the m ray. draw the vectors for the incident rays starting from the tip of the object. the location and orientation of the vectors will be graded.

The period of a pendulum varies directly as the square root of the length of the pendulum and inversely as the square root of the acceleration due to gravity. find the period when the length is 144 cm and the acceleration due to gravity is 980 cm per second squared, if the period is 7pi seconds when the length is 289 cm and the acceleration due to gravity is 980 cm per second squared.