Question 1.
A 0.650-kg mass oscillates according to the equation x = 0.25sin(4.70t) where x is in meters and t is in seconds.
The amplitude of this motion is __________m.
The frequency of this motion is ________Hz.
The period of this motion is _______s.
The total energy in this system is ________J.
When x = 0.15m the potential energy is________J, and the kinetic energy is __________J.
Question 2.
If a grandfather clock is 21 seconds slow every day, how should its length be changed from a length of 0.9930m? The period of a pendulum of length L is
T=2π√L/g (T=2pi times square root of L/g)
Its length should be (increased or decreased??)________by___________mm (use one significant figure).