Learners apply lever ratios to calculate the mechanical advantage in basic mechanisms.

Learners solve two sample problems for a mechanical reasoning assessment.

In this learning activity you'll write a technical description of a stopwatch.

In this learning activity you can practice writing a technical descriptions of a pen.

In this learning activity you'll write a technical description of an electric pencil sharpener.

In this learning activity you'll write a description of a can opener.

In this learning activity you'll write a technical description of a staple remover.

In this learning activity you'll write a technical description of a padlock.

In this learning activity you'll write a technical description of a tape dispenser.

In this learning activity you'll write a description of a vegetable peeler and submits it to the instructor.

Learners read an analogy comparing an electrical transformer to mechanical gears.

Learners read an analogy comparing mechanical work (in this case, sliding a weight) to that of electrical power. The relationship of work, apparent work, and power factor is developed.

Learners solve word problems involving basic mechanical principles such as torque, horsepower, work, and power. Students who have problems with a particular word problem may try it again with a different set of numbers.

In this animated and interactive object, learners calculate the maximum velocity of the work stroke and the return stroke.

Students view an example of how to convert rotational velocity to linear velocity. They then work practice problems.

This animated lesson shows how to calculate the amount of force generated by hydraulic cylinders.

In this animated object, learners examine the situation that occurs when any two links of a mechanism lie in the same plane or on a straight line. Crank-sliders and crank-rockers are shown.

Learners use trigonometry to calculate angular input forces involving Class 2 mechanical levers.

In this animated object, learners identify the basic parts and operation of a crank slider mechanism. They also follow the steps to use rotational input velocity to determine the linear output velocity of a slider component.

The student categorizes defense mechanisms as specific or non-specific.