QUESTION 1 What is teh best description of the term F ds fo

QUESTION 1

What is teh best description of the term F . ds (force dot d-s)?

the component of force in the direction of the motion

the component of force perpendicular to the motion

QUESTION 2

According to the lecture, F = (Wcos q -N) y + (Wsin q Fr) s . What is y and s?

y(t) and s(t) are the trajectories

y and s are forces

y and s are unit vectors in perpendicualr directions

+inf.

QUESTION 3

T2 - T1 = Integral (f dot ds) is called

Bernoulli\'s Energy Equation

Law of Energy Conservation

Principle of Lost Mass

Principle of Work and Energy

QUESTION 4

If F = (Wcos q -N) y + (Wsin q Fr) s then what is F dot ds???

(Wcos q -N) ds

(Wcos q -N) y ds

(Wsin q Fr) s ds

(Wsin q Fr) ds

QUESTION 5

If a weight w is being pulled straight up from zero elevation to an elevation of h, what is F dot ds?

m dh/dt

mg dh/dt

mgh

mgh^2/2

Solution

1 - b

2 - c

3 - d

4 - d

5 - c