Anonuniform beam 4.50 m long and weighing 1.40 kn makes an angle of 25.0° below the horizontal. it is held in position by a frictionless pivot at its upper right end and by a cable 3.00 m farther down the beam and perpendicular to it
the center of gravity of the beam is 2.00 m down the beam from the pivot. lighting equipment exerts a 5.00-kn downward force on the lower left end of the beam. find the tension t in the cable and the horizontal and vertical components of the force exerted on the beam by the pivot. start by sketching a free-body diagram of the beam.

(Downwards)

(Towards Left)

Explanation:

As we know that beam is in equilibrium

So here we can use torque balance as well as force balance for the beam

Now by torque balance equation at the pivot we can say

As we know that

mg = 1.40 kN

F = 5 kN

so we will have

Now force balance in vertical direction

(Downwards)

Force balance in horizontal direction

(Towards Left)

nec chapter 5 contains

c. information on special occupancy areas

nec chapter 6 covers

a. special equipment

which of the following rules contain the words shall or shall not and must be adhered to?

b. mandatory rules

which of the following rules identify actions that are allowed but not required and typically cover options or alternative methods?

c. optional rules

which of the following serves as the introduction to the nec and provides an overview of the book?

a. nec article 90

organizations that test products for safety are

c. nrtls

the nec is published by the

a national fire protection association

the nec is divided into

b. 9 chapters

the nec provides informative annexes for

c. informational materials and examples

two terms from nec article 100 that trainees should become familiar with are

b. labeled and listed

explanation:

gravity

explanation: