A bullet's speed can be determined using the "ballistic" type of this object.
A bullet's speed can be determined using the "ballistic" type of this object. Two of them can be coupled to exhibit chaotic motion, and Foucault used one to show the Earth rotates. A simple formula, requiring the small-angle approximation, states that one's (*) period depends only on its length and on gravity, not on the mass or amplitude of oscillation. For 10 points, name this object, a weight suspended by a string often found in clocks.
A bullet's speed can be determined using the "ballistic" type of this object.
pendulums