Required information

Problem $13\mathrm{.}070-$ DEPENDENT MULTI$-$PART PROBLEM $-$ ASSIGN ALL PARTS

NOTE: This is a multi$-$part question. Once an answer is submitted, you will be unable to return to this part.

A roller coaster starts from rest at $\backslash ($ A $\backslash ),$ rolls down the track to $\backslash ($ B $\backslash ),$ describes a circular loop of $12-$m diameter, and travels up and down past point E$.$ Assume that there is no energy loss due to friction. Given: $\backslash ($ h$=20\backslash$mathrm$\{$~m$\}\backslash ).$

Problem $13\mathrm{.}070.$b $-$ Normal forces for roller coaster

Determine the force exerted by the seat on a $\backslash (54-\backslash$mathrm$\{$kg$\}\backslash )$ rider at $\backslash ($ B$,$ D $\backslash ),$ and $\backslash ($ E $\backslash ).$

The force exerted by the seat at $\backslash ($ B $\backslash )$ is

N$.$

The force exerted by the seat at $\backslash ($ D $\backslash )$ is

N$.$

The force exerted by the seat at $\backslash ($ E $\backslash )$ is $-$

N$.$