Agrandfather clock has a pendulum that consists of a thin brass disk of radius r = 13.62 cm and mass 1.199 kg that is attached to a long thin rod of negligible mass. the pendulum swings freely about an axis perpendicular to the rod and through the end of the rod opposite the disk, as shown in fig. 15-54. if the pendulum is to have a period of 1.583 s for small oscillations at a place where g = 9.846 m/s2, what must be the rod length l (in m)?

Which surface feature of the moon is characterized by mountainous areas? terrae craters maria regolith

An uplifted block of rock between two normal faults

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.