The free$-$fall acceleration on Mars is $3\mathrm{.}7$ m$/$s$2.($a$)$ What length of pendulum has a period of $1\mathrm{.}8$ s on Earth? $($b$)$ What length of pendulum would have a $1\mathrm{.}8-$s period on Mars? An object is suspended from a spring with force constant $10$ N$/$m$.($c$)$ Find the mass suspended from this spring that would result in a period of $1\mathrm{.}8$ s on Earth. $($d$)$ Find the mass suspended from this spring that would result in a period of $1\mathrm{.}8$ s on Mars.