Skip to main content Go home Shopping cart Language English Deutsch Search Learning snippets Courses Lessons Videos Arguments Questions Exercises Formulary Illustrations Physics disciplinesElectrodynamicsMechanicsQuantum mechanicsSolid-state physicsOpticsThermodynamicsMathematics Log into an avatar Email or Avatar-ID Password Unlock upgrades✅ Unlock all physics videos✅ Unlock all exercise solutions✅ Unlock "Rearrange equations"✅ Unlock all downloads✅ Hide adsDo you want to unlock all content and features?Yes, I want! Breadcrumb Go home Mechanics Mechanics: Questions and AnswersDo you have a mechanics question that starts with What, How, Where or Why? Here you will find 5 questions and short but precise answers from mechanics.Questions of a specific discipline QuestionsPhysics QuestionsMechanics QuestionsThermodynamics QuestionsElectrodynamics QuestionsOptics QuestionsQuantum Mechanics QuestionsSolid State Physics QuestionsMathematics Max. Level - Any -Level 1 (suitable for all)Level 2 (without higher mathematics)Level 3 (with higher mathematics)Level 4 (for physics pros) Question What is Wavelength? Question How to Calculate the Moment of Inertia of a Rigid Body? Question How to Calculate Moment of Inertia when the Axis of Rotation does not Pass Through the Center of Mass? Question What is a Hooke's spring? Question What is the difference between orbital and angular velocity?