Skip to main content Go home Shop Language English Deutsch Search All about physics Courses Lessons Videos Arguments Questions Exercises Formulary Illustrations 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 9 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 How is Torque Defined? Question What is the Difference Between Orbital and Angular Velocity? Question How Does a Barometer Work? Question What is the Difference Between Gravitational and Inertial Mass? Question What is the Gravitational Constant? 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?