Asimple pendulum with length l is swinging freely with
smallangular amplitude. as the pendulum passes its central
(orequilibrium) position, its cord is suddenly and rigidly clamped
atits midpoint. in terms of the original period t of thependulum,
what will the new period be?

it will be 1/√2 of its original period.

Explanation:

How is it possible that phylogenies based on sequences from nuclear genomes and organellar genomes (i.e., chloroplasts and mitochondria) from the same group of species yield phylogenetic trees with different branching orders?   answer :   the genome of the endosymbiont is more closely related to members of the group in which it originally evolved, while the nuclear genome of the engulfing organism has its own evolutionary trajectory.

M= 700 kgvalue of g( gravity) is constant = 9.8 m/s² or 10 m/s² w = mg = 700*9.8 = 6860n or 6.680*10³ n