L7- S&C Structures

What is a point load on a beam represented by?

• A triangle

• A circle

• A square

• An arrow

What must be assumed when calculating the reaction force on a beam?

• The beam is made of wood

• The beam is in static equilibrium

• The beam is not supported

• The beam is in motion

If a 50N load is added to the center of a beam, what would be the reaction forces at each support?

• 0N for R1 and 50N for R2

• 100N for R1 and 100N for R2

• 25N for R1 and 25N for R2

• 50N for R1 and 0N for R2

What is the total weight supported by a 2m long beam with three sets of tires each weighing 30N?

• 90N

• 30N

• 180N

• 60N

How do we calculate the reaction forces for a uniformly distributed load?

• By multiplying the load by the length of the beam

• By dividing the total load by the number of supports

• By adding the loads and dividing by two

• By using the formula for point loads

What is the reaction force for R1 and R2 if the total load is 180N?

• 90N each

• 180N each

• 45N each

• 60N each

What type of loads are assumed to be acting on a single point on the beam?

• Distributed loads

• Dynamic loads

• Point loads

• Variable loads

What is the purpose of creating a mind map in this lesson?

• To prepare for a test

• To summarize the text

• To visualize structural members and strengthen frame structures

• To memorize formulas

What is the relationship between downward forces and upward forces in static equilibrium?

• Upward forces are greater

• Downward forces are greater

• They are unrelated

• They are equal

Which of the following is NOT a common support for a beam?

• Walls

• Ropes

• Foundations

• Columns