ASSIGNMENT 1
Textbook Assignment:
“Levers,” chapter 1, pages 1-1 through 1–8; Block and Tackle,” chapter
2, pages 2–1 through 2--6; “The Wheel and Axle,” chapter 3, pages 3–1
through 3–6; “The Inclined Plane and the Wedge,” chapter 4, pages: 4–1
through 4–2.
1-1.
A chain hoist lifts a 300–pound
load through a height of 10 feet
because it enables you to lift the
load by exerting less than 300
pounds of force over a distance of
10 feet or less.
1.
True
2.
False
1–2.
When a chain hoist is used to
multiply the force being exerted on
a load, the chain is pulled at a
faster rate than the load travels.
1.
True
2.
False
1–3.
What are the six basic simple
machines?
1.
2.
3.
4.
The lever, the block and
tackle, the inclined plane, the
engine, the wheel and axle, and
the gear
The lever, the block and
tackle, the wheel and axle, the
screw, the gear, and the
eccentric
The lever, the block and
tackle, the wheel and axle, the
inclined plane, the screw, and
the gear
The lever, the inclined plane,
the gear, the screw, the
fulcrum, and the torque
1–4.
Which of the following basic
principles is recognized by
physicists as governing each simple
machine?
1.
The wedge or the screw
2.
The wheel and axle or the gear
3.
The lever or the inclined plane
4.
The block and tackle or the
wheel and axle
1–5.
Which of the following simple
machines works on the same
principle as the inclined plane?
1.
Screw
2.
Gear
3.
Wheel and axle
4.
Block and tackle
1-6.
The fundamentally important points
in any lever problem are (1) the
point at which the force is
applied, (2) the fulcrum, and (3)
the point at which the
1.
lever will balance
2.
resistance arm equals the
effort arm
3.
mechanical advantage begins to
increase
4.
resistance is applied
1
