Fundamentals of Engineering Statics and Dynamics 2

Question 1

A 1,000 kg car accelerates from 0 to 20 m/s in 10 seconds. What is the net force acting on the car?

Accepted Answer

2,000 N

Answer

20,000 N

Answer

200 N

Answer

1,000 N

Question 2

What is the coefficient of static friction if a 100 N horizontal force just barely moves a 200 N block on a flat surface?

Accepted Answer

0.5

Answer

2.0

Answer

0.25

Answer

1.0

Question 3

In truss analysis, which method involves cutting through the truss and applying equilibrium to a free body diagram of one part?

Accepted Answer

Method of sections

Answer

Method of joints

Answer

Finite element method

Answer

Castigliano's method

Question 4

What is the work-energy theorem in dynamics?

Accepted Answer

The net work done on a body equals the change in its kinetic energy

Answer

Work equals force times time

Answer

Energy is always conserved in friction systems

Answer

Work equals mass times velocity

Question 5

What type of force acts along a two-force member in a truss?

Accepted Answer

Pure axial (tension or compression) force only

Answer

Shear force

Answer

Bending moment

Answer

Torsional force

Question 6

A wheel rolls without slipping. If the center moves at velocity v, what is the velocity of the contact point?

Accepted Answer

Zero

Answer

v

Answer

2v

Answer

v/2