Which of the following is an example of kinetic energy?
Leaves blowing. The other answers are examples of potential energy.
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Shifting to a higher gear in a car or truck causes
What is used to determine the speed of gears?
If a mechanical device is reported to have an advantage of 2, what does this mean?
If you have an engine that supplies 5 hp but is only 85% efficient, what's the power input?
Which of the following rules about force is correct?
What is the purpose of mechanical comprehension?
How much resistance could a 200 lb. effort force lift using a block and tackle pulley that has 10 ropes supporting the resistance?
The mass of an object is measured in
Pulley systems require the synchronized movement of all pulleys. How can pulleys escape this rule?
If this lever is in equilibrium with an effort force of 18 ft. lb. at the blue arrow and a resistance force of 9 ft. lb. at the green box, what is its mechanical advantage?
A man is using 90 lbs. of effort to lift a 540 lb. box. What is the mechanical advantage in this situation?
How does a hydraulic jack perform the task of moving objects?
What's the last gear in a gear train called?
A block and tackle refers to a device which is used to
Two gears are connected and the smaller gear drives the larger gear. The speed of rotation will
and the torque will
A shovel is an example of which class of lever?
A wedge converts force applied to its blunt end into force
its inclined surface.
A truck’s wheel with a diameter of 18 inches moves another wheel with a diameter of 9 inches. What is the mechanical advantage of the system?