A block m$1$ rests on a surface. A second block m$2$ sits on top of the first block. A horizontal force

F

applied to the bottom block pulls both blocks at constant velocity. Here m$1=$ m$2=$ m$.$

$($a$)$

What is the normal force exerted by the surface on the bottom block? $($Use the following as necessary: m and g as necessary.$)$

N$1=$

$($b$)$

What is the normal force exerted by the bottom block on m$2?($Use the following as necessary: m and g as necessary.$)$

N$2=$

$($c$)$

How would your answers to parts $($a$)$ and $($b$)$ change if m$1=6$m and m$2=$ m$?$

N$1=5$mg$,$ N$2=4\mathrm{.}5$mg

N$1=3$mg$,$ N$2=3$mg

$$

N$1=7$mg$,$ N$2=$ mg

N$1=7$mg$,$ N$2=6$mg

$($d$)$

How would your answers to parts $($a$)$ and $($b$)$ change if m$1=$ m and m$2=6$m$?$

N$1=7$mg$,$ N$2=$ mg

N$1=5$mg$,$ N$2=4\mathrm{.}5$mg

$$

N$1=7$mg$,$ N$2=6$mg

N$1=3$mg$,$ N$2=3$mg