$3$ points

Remaining "How Did I Do$?"$ Uses: $0/2$

A sphere of copper with mass $1\mathrm{.}6$kg

and density $8\mathrm{.}92\backslash$times $103$kgm$3$

is suspended from a string as shown in the diagram. g$=9\mathrm{.}8$ms$2$

$.$

a$)$ What is the tension on the string when the copper is suspended in air?

$15\mathrm{.}68$

N

b$)$ What is the tension on the string when the copper is completely submerged in water?

Number

Units

c$)$ If for part b the copper were instead of a sphere a long flat plate, then

The copper would float.

The tension on the string would decrease.

The tension on the string would remain the same.

The tension on the string would increase.

i