Question 1

When a girl swings in a tire swing,the tangential acceleration in the rope

Accepted Answer

A)  is the greatest at the highest point of the motion. 
B)  is the greatest at the lowest point of the motion. 
C)  is the greatest at a point neither highest nor lowest. 
D)  is constant. 
A)  is the greatest at the highest point of the motion. 
B)  is the greatest at the lowest point of the motion. 
C)  is the greatest at a point neither highest nor lowest. 
D)  is constant.

Question 2

At what distance from the center of the Earth would one's weight be half that recorded on the Earth's surface? Let the Earth's radius be R.

Accepted Answer

A)  0.71R 
B)  2R 
C)  4R 
D)  1.4R 
A)  0.71R 
B)  2R 
C)  4R 
D)  1.4R

Question 3

Two objects attract each other gravitationally.If the distance between their centers doubles,the gravitational force

Accepted Answer

A)  is a half. 
B)  doubles. 
C)  is a fourth. 
D)  quadruples. 
A)  is a half. 
B)  doubles. 
C)  is a fourth. 
D)  quadruples.

Question 4

A conical pendulum is constructed with a string 2.5 m in length.The pendulum is set in horizontal circular path about the vertical axis.If the angular velocity of the conical pendulum is a constant 2.8 rad/s,then the angle the string makes with the vertical axis is

Accepted Answer

A)  48 degrees. 
B)  60 degrees. 
C)  71 degrees. 
D)  75 degrees. 
E)  80 degrees. 
A)  48 degrees. 
B)  60 degrees. 
C)  71 degrees. 
D)  75 degrees. 
E)  80 degrees.

Question 5

The Crab Pulsar has a period that is currently of length 33.085 ms.It is estimated to have an equatorial radius of 15 km,about average for a neutron star.The pulsar is slowing in its rotation so that it is expected to come to rest 9.5 $\times$  1010 s in the future.What is the angular acceleration in this situation?

Accepted Answer

A)  4.8 $\times$  10-6 s-2 
B)  3.0 $\times$  10-5 s-2 
C)  7.6 $\times$  10-7 s-2 
D)  2.0 $\times$  10-9 s-2 
E)  3.2 $\times$  10-10 s-2 
A)  4.8 $\times$  10-6 s-2 
B)  3.0 $\times$  10-5 s-2 
C)  7.6 $\times$  10-7 s-2 
D)  2.0 $\times$  10-9 s-2 
E)  3.2 $\times$  10-10 s-2

Question 6

A CD with a diameter of 12.0 cm starts from rest and with a constant angular acceleration of 1.0 rad/sec2 acquires an angular velocity of 5.0 rad/sec.The CD continues rotating at 5.0 rad/sec for 15.0 seconds and then slows to a stop in 12.0 second with a constant angular deceleration.What is the centripetal acceleration of a point 4.0 cm from the center at the time 2.0 seconds from the start?

Accepted Answer

A)  0.37 m/s2 
B)  0.30 m/s2 
C)  0.28 m/s2 
D)  0.21 m/s2 
E)  0.16 m/s2 
A)  0.37 m/s2 
B)  0.30 m/s2 
C)  0.28 m/s2 
D)  0.21 m/s2 
E)  0.16 m/s2

Question 7

A CD has a diameter of 12.0 cm.If the CD is rotating at a constant angular velocity of 20 radians per seconds,then the tangential velocity of a point on the circumference is

Accepted Answer

A)  2.0 m/s. 
B)  1.9 m/s. 
C)  1.5 m/s. 
D)  1.2 m/s. 
E)  1.0 m/s. 
A)  2.0 m/s. 
B)  1.9 m/s. 
C)  1.5 m/s. 
D)  1.2 m/s. 
E)  1.0 m/s.

When a girl swings in a tire swing,the tangential acceleration in the rope

At what distance from the center of the Earth would one's weight be half that recorded on the Earth's surface? Let the Earth's radius be R.

Two objects attract each other gravitationally.If the distance between their centers doubles,the gravitational force

A conical pendulum is constructed with a string 2.5 m in length.The pendulum is set in horizontal circular path about the vertical axis.If the angular velocity of the conical pendulum is a constant 2.8 rad/s,then the angle the string makes with the vertical axis is

A CD has a diameter of 12.0 cm.If the CD is rotating at a constant angular velocity of 20 radians per seconds,then the tangential velocity of a point on the circumference is

Introduction

Force

Acceleration and Newtons Second Law of Motion

Motion With Constant Acceleration

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

When a girl swings in a tire swing,the tangential acceleration in the rope

At what distance from the center of the Earth would one's weight be half that recorded on the Earth's surface? Let the Earth's radius be R.

Two objects attract each other gravitationally.If the distance between their centers doubles,the gravitational force

A conical pendulum is constructed with a string 2.5 m in length.The pendulum is set in horizontal circular path about the vertical axis.If the angular velocity of the conical pendulum is a constant 2.8 rad/s,then the angle the string makes with the vertical axis is

A CD has a diameter of 12.0 cm.If the CD is rotating at a constant angular velocity of 20 radians per seconds,then the tangential velocity of a point on the circumference is

Introduction

Force

Acceleration and Newtons Second Law of Motion

Motion With Constant Acceleration

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