Physics: Two people are holding up the ends of a 4.25-kg wooden plank. a 6.00-kg box sits in the center of the plank. what forces do the people exert on the plank? hint: the forces of the people must equal the forces acting on the box and the plank.

The answer is 11if you plug into your calculator make sure you use parenthesis...

Two people are holding up the ends of a 4.25-kg

cyndy50

09.01.2022

The forces the people exert on the plank is 100.45N

Explanation:

Force of man 1 on plank = F_1

Force of man 2 on plank = F_2

$\bold{\text{ \bold{ Acceleration due to gravity}} = 9.8 m/s^2}$

Gravitational force on plank = $\bold{m\times a = 4.25\times 9.8 = 41.65N}$

Gravitational force on box = $\bold{m\times a= 6\times 9.8 = 58.8N}$

Given hint is forces of people is equal to forces on plank and box

$\bold{\Rightarrow F-1 + F_2 = 41.65 + 58.8 = 100.45N}$

in the state of equilibrium normal force is equal and opposite to gravitational force.

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