Inclined Plane, Wedge, and Screw
friction
A major problem in the use of the inclined plane is
true
A screw is simply a form of an inclined plane.
effort force
A single fixed pulley changes the direction of the ________.
thinner
A wedge has a higher IMA as it gets:
force
An inclined plane reduces the ________ needed to move a load vertically.
1
Each supporting strand of a block and tackle increases the mechanical advantage by ____.
lubricants
Friction can be reduced by using oil or grease, which are ______.
direction
Gears of different sizes change the speed and ______ of force.
length
The mechanical advantage of the inclined plane can be increased by increasing the ramp's horizontal _________.
true
The screw has very low efficiency.
saw
Which one of the following is not an example of the wedge?
screw
bolt and nut
second-class lever
bottle opener
single fixed pulley
can only fix the direction of a force
third-class lever
forearm
wedge
nail
wheel and axle
pencil sharpener
inclined plane
ramp
first-class lever
see saw
block and tackle
used to lift engine