Find the direction of its average acceleration. Find the direction of its average acceleration. 140 ∘ measured counterclockwise from the +x axis 41 ∘ measured counterclockwise from the +x axis 49 ∘ measured counterclockwise from the +x axis 229 ∘ measured counterclockwise from the +x axis

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.