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VMariaS [17]
3 years ago
9

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.
Physics
1 answer:
ira [324]3 years ago
5 0

The forces the people exert on the plank is 100.45N

<u>Explanation:</u>

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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