Rotational Kinematics MC Review

Descripción

12th grade Physics Test sobre Rotational Kinematics MC Review, creado por Kate S el 16/10/2017.
Kate S
Test por Kate S, actualizado hace más de 1 año
Kate S
Creado por Kate S hace alrededor de 7 años
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Resumen del Recurso

Pregunta 1

Pregunta
Which of the following is the rotational analog of velocity?
Respuesta
  • α
  • I
  • ω
  • τ

Pregunta 2

Pregunta
A cylinder rotates with constant angular acceleration about a fixed axis. The cylinder's moment of inertia about the axis is 4 kg m². At time t=0, the cylinder is at rest. At time t=2 its angular velocity is 1 rad/s. What is the angular acceleration of the cylinder between t=0 and t=2.
Respuesta
  • .05 rad/s²
  • 1 rad/s²
  • 2 rad/s²
  • 4 rad/s²
  • 5 rad/s²

Pregunta 3

Pregunta
A cylinder rotates with constant angular acceleration about a fixed axis. The cylinder's moment of inertia about the axis is 4 kg m². At time t=0, the cylinder is at rest. At time t=2 its angular velocity is 1 rad/s. What is the angular momentum of the cylinder at t=2?
Respuesta
  • 1 rad/s²
  • 2 rad/s²
  • 3 rad/s²
  • 4 rad/s²
  • It cannot be determined without knowing the radius

Pregunta 4

Pregunta
A cylinder rotates with constant angular acceleration about a fixed axis. The cylinder's moment of inertia about the axis is 4 kg m². At time t=0, the cylinder is at rest. At time t=2 its angular velocity is 1 rad/s. What is the kinetic energy1 of the cylinder at t=2?
Respuesta
  • 1J
  • 2J
  • 3J
  • 4J
  • It cannot be determined without knowing the radius of the cylindar

Pregunta 5

Pregunta
The mass of Planet X is one-tenth that of the Earth, and its diameter is one-half that of the Earth. The acceleration due to gravity at the surface of Planet X is most nearly...
Respuesta
  • 2 m/s²
  • 4 m/s²
  • 5 m/s²
  • 7 m/s²
  • 10 m/s²

Pregunta 6

Pregunta
A satellite of mass m and speed v moves in a stable, circular orbit around a planet of mass M. What is the radius of the satellie's orbit?
Respuesta
  • (GM) / (mv)
  • (Gv) / (Mm)
  • (GM) / (v²)
  • (GmM) / (v)
  • (GmM) / (v²)

Pregunta 7

Pregunta
A particle of mass m moves with a constant speed v along the dashed line y=a. When the x-cordinate of the particle is x₀, the magnitude of the angular momentum of the particle with respect to the orgin of the system is...
Respuesta
  • 0
  • mva
  • mvx₀
  • mv √(x² + a²)
  • mva / √(x² + a²)

Pregunta 8

Pregunta
A satellite S is in an elliptical orbit around a planet P, as shown above, with r₁ being the closest distance and r₂ the furthest distance from the center of the planet. If the satellite has a speed v₁ at its closest distance, what speed does it have at its farthest distance?
Respuesta
  • (r₁ v₁) / (r₂)
  • (r₂ v₁) / (r₁)
  • (v₂-m₂) v₁
  • ((r₁+r₂) v₁) / 2
  • ((r₁-r₂) v₁) / (r₁-r₂)

Pregunta 9

Pregunta
A uniform stick has length L. The moment of inertia about the center of the stick is I₀. A particle of mass M is attached to one end of the stick. The moment of inertia of the combined system about the center of the stick is....
Respuesta
  • I₀ + (1/4) ML²
  • I₀ + (1/2) ML²
  • I₀ + (1/3) ML²
  • I₀ + ML²
  • I₀ + (5/4) ML²

Pregunta 10

Pregunta
A light rod with masses attached to its ends is pivoted around a horizontal axis as shown above. When released from rest in a horizontal orientation, the rod begins to rotate. What it the rotational inertia of the 3M₀ mass around the pivot point?
Respuesta
  • 3M₀ℓ²
  • 9M₀ℓ²
  • 2M₀ℓ²
  • 4M₀ℓ²
  • 7M₀ℓ²

Pregunta 11

Pregunta
A light rod with masses attached to its ends is pivoted around a horizontal axis as shown above. When released from rest in a horizontal orientation, the rod begins to rotate. What it the rotational inertia of the system around the pivot point?
Respuesta
  • 3M₀ℓ²
  • 9M₀ℓ²
  • 2M₀ℓ²
  • 4M₀ℓ²
  • 7M₀ℓ²

Pregunta 12

Pregunta
A light rod with masses attached to its ends is pivoted around a horizontal axis as shown above. When released from rest in a horizontal orientation, the rod begins to rotate. What it the magnitude of the torque of the system around the pivot point?
Respuesta
  • gM₀ℓ
  • 2gM₀ℓ
  • 3gM₀ℓ
  • 5gM₀ℓ
  • 7gM₀ℓ
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