Simple Truss Problem Q1 Reaction forces

The video tutorial explains how to calculate reaction forces in a simple truss structure. It begins with setting up the problem, including defining the truss and external forces. The instructor then creates a free body diagram, identifies the types of supports, and defines the axes and necessary formulas. The video proceeds to solve for reaction forces using algebraic methods and verifies the results through torque calculations. The tutorial concludes with a summary of the solutions and a brief introduction to upcoming topics.

What is the assumed mass of the truss in the problem setup?

• 0 kilograms

• 1 kilogram

• 20 kilograms

• 10 kilograms

What type of support prevents both horizontal and vertical movements?

• Roller support

• Hinge support

• Pin support

• Fixed support

Which direction is considered positive for the Y-axis in the problem?

• Upward

• Rightward

• Leftward

• Downward

What is the sum of forces in the X direction equal to in statics?

• 20 kN

• 0

• 10 kN

• maX

What rule is used to determine the positive direction for torque?

• Right-hand rule

• Left-hand rule

• Newton's rule

• Euler's rule

What is the perpendicular distance used to calculate the torque due to the 20 kN force?

• 2 meters

• 3 meters

• 0 meters

• 1 meter

What is the value of the reaction force EY?

• 15 kN

• 5 kN

• 10 kN

• 20 kN

What is the value of the reaction force AY?

• 5 kN

• 10 kN

• 15 kN

• 20 kN

What is the horizontal reaction force at point A?

• 10 kN

• 20 kN

• 5 kN

• 0 kN

Why is it intuitive for the forces AY and EY to be equal?

• The truss is symmetric

• The truss is asymmetric

• The truss is rotating

• The truss is accelerating