Module 01 - Engineering mechanics

Open Ended

What are the seven fundamental SI units and their symbols?

Multiple Choice

Differentiate between the SI system and the British system of units. List the seven fundamental SI units with their respective symbols.

• SI system is based on powers of 10

• British system is used globally

• SI system uses feet and pounds

• British system is decimal-based

Multiple Choice

What is the SI base unit of time?

• The mean solar day
• the second
• the time it takes light to travel 10⁸ m
• the rate at which an atom oscillates

Multiple Choice

A push or pull is referred to as a: 

• vector
• force
• air resistance

Open Ended

What is the difference between Kinematics and Kinetics in Dynamics?

Multiple Choice

The figure above shows the forces exerted on a block that is sliding on a rough horizontal surface: The weight of the block is 500 N, (take g = 10 m/s²) the normal force is 500 N, the frictional force is 100 N, and there is an unknown force F exerted to the right. The acceleration of the block is 0.4 m/s². The value of F is most nearly

• 20 N

• 80 N

• 110 N

• 120 N

Multiple Choice

A uniform ladder of weight W leans without slipping against a wall making an angle 𝜽 with a floor as shown above. There is friction between the ladder and the floor, but the friction between the ladder and the wall is negligible.

The magnitude of the friction force exerted on the ladder by the floor is

• $$2W\tan\theta$$

• $$W$$

• $$W\cot\theta$$

• $$\frac{W}{2}$$

• $$\frac{W}{2}\cot\theta$$

Fill in the Blanks

Multiple Choice

A roller coasters accelerates from an initial velocity of 6.0 m/s to a final velocity of 70 m/s over 4 seconds.  What's the acceleration?

• 24 m/s²
• 18 m/s²
• 16 m/s²
• 16 m/s

Multiple Choice

What is the main difference between a rigid body and a deformable body in terms of distance between points?

• Distance remains constant for rigid bodies

• Distance changes for deformable bodies

• Both remain constant

• Both change

Multiple Choice

How is strain calculated?

• Number of sleepless nights divided by number of cups of coffee

• Divide load (F) by the original test sample cross-sectional area (A₀).

• Elongation (δ) under load divided by the original Length (L₀)

• Stress (σ) divided by strain (ε)

Multiple Choice

If a material has a cross-sectional area of 5 square meters and subjected to a normal force of 20 N, which of the following is the normal stress?

• 4 Pa

• 25 Pa

• 0.4 Pa

• 15 Pa

Poll

How confident do you feel about this topic now?

• Very confident
• Somewhat confident
• Not confident