Name the 5 simple Machines
Whats the first simple machine?
Lever
The center of a wheel and axle is called the fulcrum.
False
What is the equation for power?
p=w/t
while pushing a cart around you pushed it 30 meters and did 90 joules of work, what was the force?
4 meters
Whats the second simple machine?
Wheel and axle
When you turn a screw, you apply force along its inclined plane.
True.
What is the equation for work?
Work=Force* Distance
A speaker is pushed across the floor for a distance of 5 meters with a force of 25 Newtons in 5 seconds?
How much work is done?
125j
What is the power?
25w
What is the third simple machine?
Pulley
The wheel of a wheel and axle turns more slowly than the axle?
False
What is the equation mechanical advantage
Ma=output/input
To open a soda bottle, a force of 40n is applied to the bottle opener. If the bottle opener applies a force of 100N to the cap, What is the mechanical advantage of the bottle opener?
Output force~100
Input force ~40
Mechanical advantage~ 2.5
Whats the fourth simple machine?
Wedge
A wedge is used to cut or split objects.
TRue
What is the equation for mechanical efficiency?
Me=output/input*100
Whats the fifth simple machine?
Inclined Plane
A lever may or may not change the strength of the applied force.
True
What is the unit measurement for power
Watts