Answer: C
Period/ Period of the pendulum.
Content:
Simple pendulum is a small diameter bob which is suspended from light cord or string. The string is strong enough to stretch.
Pendulums are quiet common in use such as clocks, swings etc.,
From the simple pendulum we can find conditions under which it performs simple harmonic motion and we can also derive the expressions for Period of pendulum, frequency etc.
<em>Period of a pendulum/Time period is given by the following expression</em>
<em> </em><em> T =2π.√(L/g) seconds </em>
<em> </em><em>T = period of pendulum in seconds</em>
<em> L = Length of the string/cord in meters</em>
<em> g = gravitational force in m/s² ( g = 9.8 m/s² )</em>
<em>Period of pendulum is independent on mass of the bob.</em>
<em>So, The relation between length of the cord and gravity is used to determine the period of pendulum</em>
Answer: dv/dt = 0
Explanation: Acceleration has to do with when you are changing velocity. since velocity is a speed and a direction you only accelerate when you change speed or change direction or change both in other words you are not accelerating when you are moving in a constant speed and at a specified direction. E.g driving Eastward at a constant speed of 24m/s, such scenario is a case of not accelerating that is acceleration is zero.
