Question

could someone help me with physics ! Please !

Answer 1

how??

Answer 2

this is the question,
A completely submerged chunk of metal sinks in water with an acceleration equal to one-fifth of g (where g = 9.8 m/s\ Find the specific gravity (defined above) of this metal. Note, ignore all drag effects in the fluid.

Answer 3

1.2

Answer 4

could you explain it with details?

Answer 5

yeah.. of course

Answer 6

say, the density of metal is d g/cc, density of water is 1 g/cc

Answer 7

so, the weight of the metal= vdg
weight of displaced water=buyoancy= vg
so, the net downward force= vdg-vg
the mass of the chunk=vd
so the downward acceleration= (vdg-vd)/vd=g/5 (according the question)
solve it, u will get the answer :)

Answer 8

thanks a lot !