For a sine wave depicting simple harmonic motion, the smaller the amplitude of the wave, the smaller the displacement of the pendulum from the equilibrium position. the shorter the period, the ? the pendulum’s rod.

The correct answer is

The shorter the period, the shorter the pendulum’s rod

In fact, the period of a simple pendulum is given by:

where T is the period, L is the length of the pendulum's rod, g is the gravitational acceleration. We immediately see from the formula that T and L are proportional: therefore, if the period T is shorter, the length of the pendulum's rod L is shorter as well.

a is the best answer your welcome

note: the given question is incomplete.

complete question is given below.

which is an example of kinetic energy?

a. the energy stored in ethanol  

b. a hockey puck sliding across the ice  

c. a compressed spring  

d. a ball sitting at the top of a ramp

solution: the kinetic energy is the energy posses by the virtue of the motion of the object.

in the given options, a, c and d are the example of potential energy because it is the energy posses by the virtue of the rest of the object. but option b has the kinetic energy as the object is in motion.

hence, a hockey puck sliding across the ice   is the apex example of kinetic energy.

so, the option (b) a hockey puck sliding across the ice   is the correct option.