Question

A businesswoman is rushing out of a hotel through a revolving door with a force of 80 N applied at the edge of the 3 m wide door. Where is the pivot point and what is the maximum torque?

Answer 1

Step-by-step explanation:

Given

Force applied
`F=80\ N`

Door is
`d=3\ m` wide

for gate to revolve Properly Pivot Point must be at center i.e. 1.5 from either end

Torque applied is
`T=force* distance`

Maximum torque

`T_(max)=F* (d)/(2)`

`T_(max)=80* (3)/(2)`

`T_(max)=120\ N-m`