Question 1

Two planets travel in circular orbits about a star. The period of planet A is T, while that of planet B is 3T. What is the ratio of their orbital radii, RA/RB?

Accepted Answer

A)  0.33 
B)  0.19 
C)  0.48 
D)  0.69 
A)  0.33 
B)  0.19 
C)  0.48 
D)  0.69

Question 2

A 2.00 kg mass is moving in a circular path with a radius of 5.00 cm. The mass starts from rest and, with constant angular acceleration, obtains an angular velocity of 6.00 rad/sec in 3.00 sec. The mass then comes to a stop with constant angular acceleration in 4.00 sec. The radial component of acceleration of the mass at 2.00 sec is

Accepted Answer

A)  1.220 m/s2. 
B)  0.980 m/s2. 
C)  0.800 m/s2. 
D)  0.656 m/s2. 
E)  0.100 m/s2. 
A)  1.220 m/s2. 
B)  0.980 m/s2. 
C)  0.800 m/s2. 
D)  0.656 m/s2. 
E)  0.100 m/s2.

Question 3

A car travels around an unbanked curve at 17 m/s. If the static friction coefficient between the tires and the road is 0.45, what is the minimum radius curve that the car can take at this speed without slipping?

Accepted Answer

A)  65 m 
B)  3.9 m 
C)  15 m 
D)  8.1 m 
A)  65 m 
B)  3.9 m 
C)  15 m 
D)  8.1 m

Question 4

A CD has a diameter of 12.0 cm. If the CD starts from rest and has a constant angular acceleration of 2.00 rad/sec2, then the radial acceleration of a point 3.00 cm from the center of the CD after 3.00 sec is

Accepted Answer

A)  0.950 m/s2. 
B)  1.08 m/s2. 
C)  1.25 m/s2. 
D)  1.58 m/s2. 
E)  1.83 m/s2. 
A)  0.950 m/s2. 
B)  1.08 m/s2. 
C)  1.25 m/s2. 
D)  1.58 m/s2. 
E)  1.83 m/s2.

Question 5

An airplane is traveling at 250 m/s in level flight. In order to make a change in direction, the airplane travels in a horizontal curved path. To fly in the curved path, the pilot banks the airplane at an angle such that the lift has a horizontal component that provides the horizontal radial acceleration to move in a horizontal circular path. If the airplane is banked at an angle of 15.0 degrees, then the radius of curvature of the curved path of the airplane is

Accepted Answer

A)  20.1 km. 
B)  23.8 km. 
C)  25.0 km. 
D)  27.5 km. 
E)  30.1 km. 
A)  20.1 km. 
B)  23.8 km. 
C)  25.0 km. 
D)  27.5 km. 
E)  30.1 km.

Two planets travel in circular orbits about a star. The period of planet A is T, while that of planet B is 3T. What is the ratio of their orbital radii, R_A/R_B?

A car travels around an unbanked curve at 17 m/s. If the static friction coefficient between the tires and the road is 0.45, what is the minimum radius curve that the car can take at this speed without slipping?

A CD has a diameter of 12.0 cm. If the CD starts from rest and has a constant angular acceleration of 2.00 rad/sec^2, then the radial acceleration of a point 3.00 cm from the center of the CD after 3.00 sec is

Introduction

Motion Along a Line

Motion in a Plane

Force and Newtons Laws of Motion

Conservation of Energy

Linear Momentum

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Heat

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

Quantum Physics

Nuclear Physics

Particle Physics

Filters

Exam 5: Circular Motion

Two planets travel in circular orbits about a star. The period of planet A is T, while that of planet B is 3T. What is the ratio of their orbital radii, RA/RB?

A car travels around an unbanked curve at 17 m/s. If the static friction coefficient between the tires and the road is 0.45, what is the minimum radius curve that the car can take at this speed without slipping?

A CD has a diameter of 12.0 cm. If the CD starts from rest and has a constant angular acceleration of 2.00 rad/sec2, then the radial acceleration of a point 3.00 cm from the center of the CD after 3.00 sec is

Introduction

Motion Along a Line

Motion in a Plane

Force and Newtons Laws of Motion

Conservation of Energy

Linear Momentum

Torque and Angular Momentum

Fluids

Elasticity and Oscillations

Waves

Sound

Temperature and the Ideal Gas

Heat

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Current and Circuits

Magnetic Forces and Fields

Electromagnetic Induction

Alternating Current

Electromagnetic Waves

Reflection and Refraction of Light

Optical Instruments

Interference and Diffraction

Relativity

Early Quantum Physics and the Photon

Quantum Physics

Nuclear Physics

Particle Physics

Filters

Two planets travel in circular orbits about a star. The period of planet A is T, while that of planet B is 3T. What is the ratio of their orbital radii, R_A/R_B?

A CD has a diameter of 12.0 cm. If the CD starts from rest and has a constant angular acceleration of 2.00 rad/sec^2, then the radial acceleration of a point 3.00 cm from the center of the CD after 3.00 sec is