Question

Answer this correctly and get 50 points at once

Answer 1

Answer:

a.r

b.p

c.s

d.q ok bro tuanks

Answer 2

Answer:

ELet x be the extension in spring when 2 kg mass leaves contact with the ground.

kx=2g

x=2gk

=2×1040=12m

By law of conservation of energy for 5 kg mass

mgx=12k2+12mv2

v=2gx−kx2m−−−−−−−−−√

v=2×10×12−405×14−−−−−−−−−−−−−−−−−−√

v=22–√m/s

Hence b is the correct answer.