professor-curious-logo
professor-curious-logo
  2. AP Physics 1 Revised
FlashcardFlashcard
Study GuideStudy GuideQuestion BankQuestion BankGlossaryGlossary

What is the effect of increasing angular velocity on rotational kinetic energy?

Rotational kinetic energy increases (quadratically).

Flip to see [answer/question]
Flip to see [answer/question]
Revise later
SpaceTo flip
If confident

All Flashcards

What is the effect of increasing angular velocity on rotational kinetic energy?

Rotational kinetic energy increases (quadratically).

What happens when a figure skater pulls their arms closer to their body?

Their rotational speed increases due to conservation of angular momentum.

What happens when a rotating object's rotational inertia increases?

Its rotational kinetic energy decreases (if angular velocity remains constant).

What is the effect of applying a constant horizontal force to the center of a cylinder?

The cylinder experiences linear and angular acceleration.

What happens when a solid and hollow sphere are released at the top of an incline?

The solid sphere reaches the bottom first.

What are the differences between rotational and translational kinetic energy?

Rotational: Energy due to rotation, depends on moment of inertia and angular velocity. Translational: Energy due to linear motion, depends on mass and linear velocity.

What are the differences between scalar and vector quantities?

Scalar: Magnitude only (e.g., rotational kinetic energy). Vector: Magnitude and direction (e.g., angular velocity, angular momentum).

What are the differences between moment of inertia for a solid sphere and a hollow sphere?

Solid Sphere: I=(2/5)MR2I = (2/5)MR^2I=(2/5)MR2 (mass concentrated closer to the center). Hollow Sphere: I=(2/3)MR2I = (2/3)MR^2I=(2/3)MR2 (mass distributed further from the center).

What are the differences between rolling with slipping and rolling without slipping?

Rolling without slipping: v=Rωv = Rωv=Rω (linear and angular velocities are related). Rolling with slipping: v≠Rωv ≠ Rωv=Rω (linear and angular velocities are independent).

What are the differences between angular momentum and rotational kinetic energy?

Angular Momentum: Vector quantity, measures the quantity of rotation. Rotational Kinetic Energy: Scalar quantity, measures the energy of rotation.

What is the difference between Rotational and Translational Kinetic Energy?

Rotational KE: Energy from spinning | Translational KE: Energy from movement of center of mass.

Compare scalar and vector quantities.

Scalar: Magnitude only | Vector: Magnitude and direction.