Professional Courses
Industry-relevant training in Business, Technology, and Design to help professionals and graduates upskill for real-world careers.
Categories
Interactive Games
Fun, engaging games to boost memory, math fluency, typing speed, and English skills—perfect for learners of all ages.
Typing
Memory
Math
English Adventures
Knowledge
Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is a rotating mass?
💡 Hint: Think about something that spins.
Question 2
Easy
Why do we balance rotating masses?
💡 Hint: Consider the effects of imbalance.
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What can cause undesirable vibrations in machines?
- Alignment of mass
- Centrifugal forces
- Balanced weights
💡 Hint: Think about how forces change with movement.
Question 2
True or False: Balancing is unnecessary in rotating machinery.
- True
- False
💡 Hint: Consider the role of balance in stability.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
A machine operates with a rotating mass that has a moment of inertia of 5 kg·m². If the mass is rotating at 10 rad/s, calculate the centrifugal force acting on the mass at a center distance of 0.2 m.
💡 Hint: Use the relationship of force with moment of inertia.
Question 2
If a counterweight adds 3 kg to balance a 5 kg rotating mass offset by 0.1 m, determine the effectiveness coupled with another mass of 2 kg evaluated at 0.2 m offset.
💡 Hint: Think about the torque produced by the mass at its offset.
Challenge and get performance evaluation