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.

Learners read a description of torque and study the factors that cause its magnitude to change.

In this interactive object, learners are given the RPM, the pulley diameter, and the force, and proceed to calculate belt velocity and horsepower.

In this interactive object, students view an animated depiction of Class 3 levers. A matching quiz completes the activity.

In this animated object, learners examine formulas for displacement and velocity ratios. They also view examples and calculate velocity and the velocity ratio.

In this activity, we will explain the mechanics of site structure and the role it plays in search engine optimization.