Answer:
Subtracted 12 times a number from 72 is less than 24.
Step by step solution
Given inequality is
We need to write in word.
12a means 12 times a number “a”
72-12a means subtract 12a from 72.
72-12a<24 means result is less than 24.
Inequality shows “Subtracted 12 times a number from 72 is less than 24”
If we solve for number “a”
-12a<24-72
-12a<-24
a>2
All the number greater than 2 satisfy the given inequality.
Step-by-step explanation:
Let
= mass of the painter
= mass of the scaffold
= mass of the equipment
= tension in the cables
In order for this scaffold to remain in equilibrium, the net force and torque on it must be zero. The net force acting on the scaffold can be written as
Set this aside and let's look at the net torque on the scaffold. Assume the counterclockwise direction to be the positive direction for the rotation. The pivot point is chosen so that one of the unknown quantities is eliminated. Let's choose our pivot point to be the location of . The net torque on the scaffold is then
Solving for T,
or
To solve for the the mass of the equipment , use the value for T into Eqn(1):