Normal force in Torque

I saw the solution to this online but they ignored the existence of the Normal force completely. Wouldn't the torque due to normal force cancel out torque due to weight? Thank you

iTeachChem Helper•10/9/25, 6:50 PM

@Gyro Gearloose

iTeachChem Helper•10/9/25, 6:50 PM

Note for OP

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TTokai I saw the solution to this online but they ignored the existence of the Normal f...

Real potato•10/9/25, 6:57 PM

When the block is about the topple

Real potato•10/9/25, 6:57 PM

The normal shifts to the rightmost edge of the cube

Real potato•10/9/25, 6:57 PM

so if u balance torque about that point

Real potato•10/9/25, 6:57 PM

The torque due to normal would be zero

Real potato•10/9/25, 6:57 PM

Thats why they might hve neglected that

Real potato•10/9/25, 6:59 PM

btw the ans should be c ig

RReal potato The normal shifts to the rightmost edge of the cube

TokaiOP•10/9/25, 7:01 PM

Thank you for helping, yes the answer is given C
I understand there wouldn't be any torque by the normal if it originates from the corner, but isn't that assuming a different start position (just slightly tilted) than the actual one?

TTokai Thank you for helping, yes the answer is given C I understand there wouldn't be ...

Real potato•10/9/25, 7:05 PM

as we start tilting the Normal eventually gets shifted

Real potato•10/9/25, 7:06 PM

Its the toppling condition na it has to topple about a edge of cube so only the edge should be in contact with the floor

Sephrina•10/12/25, 6:49 PM

@Tokai

Normal force in Torque

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