Question

a body of mass 12 kg is taken vertically upward to reach the hieght of 10m . what is the work done (a) 1200joule
(b) 120 joule
(c) 1.2 joule
(d) 12 joule​

Answer 1

Answer:

K.E at point of launch = total M.E.   (since these as no P.E at launch)

                                     =580+1380   (since there is no non-conservation force, so ME is conserved)

⇒21mv2=1960

⇒v2=51960

⇒v=19.8 m/s

Answer 2

Answer:

v=19.8m/s

Explanation:

hi good evening...

plz follow me m..

plz mark me as a bralinlist ❤️

thank you enjoy your day