Justify the following statements

cbse
oscillations

#1

Justify the following statements
(i) The motion of an artificial satellite around the earth cannot be taken as SUM.
(ii) The time period of a simple pendulum will get doubled if its length is increased four times.


#2

(i) The motion of an artificial satellite around the earth is periodic as it repeats after a regular interval of time. But it cannot be taken as SHM because it is not a to and fro motion about any fixed point that is, mean position.
(ii) Time period of simple pendulum,

Clearly, if the length is increased four times, the time period gets doubles.