The speed at which a grandfather clock runs is controlled by a swinging pendulum. a) If you find that the clock loses time each day, what adjustment would you need to make to the pendulum so it will keep better time? b). If the pendulum currently is 15 cm, by how much would you need to change the length to make the period lesson by 0.04 s? Use scientific notation rounding to the nearest hundredth.

2. A mass, M, is attached to a massless rod with length, L, to act as a pendulum. The mass is lifted through a 90° angle so that the rod is horizontal, then released. At the bottom of its swing the pendulum has velocity A. v = (gL)² B. v = gL C. v= V2gL D. v = MgL E. v = VM8L

A spring with spring constant 15 N/m hangs from the ceiling. A ball is attached to the spring and allowed to come to rest. It is then pulled down 9.5 cm and released. The ball makes 20 oscillations in 23 s seconds. You may want to review (Pages 403-404) Part A What is its the mass of the ball? Express your answer to two significant figures and include the appropriate units. m = Submit Part B "i Vmax= μA Submit Value Request Answer What is its maximum speed? Express your answer to two significant figures and include the appropriate units. μA Value Units Request Answer ? Units ?

A pendulum has a period of 5.8 s.  If you were to transfer this pendulum to the surface of Mars (where g is 3.71 meters per second squared), what would the period (in seconds) be?