Question 1

Halving the mass of the bob on a simple pendulum will cause a change in the frequency of the pendulum swing by what factor?

Accepted Answer

A)  4.0 
B)  2.0 
C)  1.0 
D)  0.50 
A)  4.0 
B)  2.0 
C)  1.0 
D)  0.50

Question 2

In an elastic solid there is a direct proportionality between strain and:

Accepted Answer

A)  elastic modulus. 
B)  temperature. 
C)  cross-sectional area. 
D)  stress. 
A)  elastic modulus. 
B)  temperature. 
C)  cross-sectional area. 
D)  stress.

Question 3

If it takes 8.0 N to stretch a spring 6.0 cm, and if the spring is then cut in half, what force does it take to stretch one of the halves 3.0 cm?

Accepted Answer

A)  2.0 N 
B)  4.0 N 
C)  8.0 N 
D)  16 N 
A)  2.0 N 
B)  4.0 N 
C)  8.0 N 
D)  16 N

Question 4

Consider the curve x = A sin(kt), with A > 0. At which point on the graph is it possible that t = 0?

Accepted Answer

A)  Point t1 
B)  Point t2 
C)  Point t3 
D)  Point t4 
A)  Point t1 
B)  Point t2 
C)  Point t3 
D)  Point t4

Question 5

For a mass suspended on a spring in the vertical direction, the time for one complete oscillation will depend on:

Accepted Answer

A)  the value for g (the acceleration due to gravity). 
B)  the distance the mass was originally pulled down. 
C)  the maximum speed of the oscillating mass. 
D)  the time doesn't depend on any of the above. 
A)  the value for g (the acceleration due to gravity). 
B)  the distance the mass was originally pulled down. 
C)  the maximum speed of the oscillating mass. 
D)  the time doesn't depend on any of the above.

Question 6

A pendulum on the Earth has a period T. The acceleration due to gravity on Mars is less than that on the Earth, and the acceleration due to gravity on the Moon is even less. Where would the period of an identical pendulum be the least?

Accepted Answer

A)  on the Earth 
B)  on the Moon 
C)  on Mars 
D)  The period of a pendulum would be the same on the Earth, Moon, and Mars since the period depends on the pendulum's length which is the same for identical pendula. 
A)  on the Earth 
B)  on the Moon 
C)  on Mars 
D)  The period of a pendulum would be the same on the Earth, Moon, and Mars since the period depends on the pendulum's length which is the same for identical pendula.

Question 7

The bulk modulus of a material, as a meaningful physical property, is applicable to which of the following?

Accepted Answer

A)  only solids 
B)  only liquids 
C)  only gases 
D)  solids, liquids and gases 
A)  only solids 
B)  only liquids 
C)  only gases 
D)  solids, liquids and gases

Question 8

The quantity "stress" expressed in terms of the fundamental quantities (mass, length, time) is equivalent to:

Accepted Answer

A)  MLT - 1. 
B)  ML - 1T - 2. 
C)  M2L - 1T - 3. 
D)  a dimensionless quantity. 
A)  MLT - 1. 
B)  ML - 1T - 2. 
C)  M2L - 1T - 3. 
D)  a dimensionless quantity.

Question 9

Suppose there is an object for which F = +kx. What will happen if the object is moved away from equilibrium (x = 0) and released?

Accepted Answer

A)  It will return to the equilibrium position. 
B)  It will move further away with constant velocity. 
C)  It will move further away with constant acceleration. 
D)  It will move further away with increasing acceleration. 
A)  It will return to the equilibrium position. 
B)  It will move further away with constant velocity. 
C)  It will move further away with constant acceleration. 
D)  It will move further away with increasing acceleration.

Question 10

If a long spring with spring constant k is cut into 3 equal lengths, what is the spring constant of each of the 3 shorter springs?

Accepted Answer

A)  It is still k. 
B)  It is 3k. 
C)  It is k/3. 
D)  It is k/9. 
A)  It is still k. 
B)  It is 3k. 
C)  It is k/3. 
D)  It is k/9.

Question 11

A uniform pressure of 21 * 105 N/m2 is applied to all six sides of a copper cube. What is the percentage change in volume of the cube? (for copper, B = 14 * 1010 N/m2)

Accepted Answer

A)  2.4 *10-2 % 
B)  1.5 * 10-3 % 
C)  8.4 *10-2 % 
D)  0.5 *10-3 % 
A)  2.4 *10-2 % 
B)  1.5 * 10-3 % 
C)  8.4 *10-2 % 
D)  0.5 *10-3 %

Exam 11: Harmonic Motion and Elasticity

Halving the mass of the bob on a simple pendulum will cause a change in the frequency of the pendulum swing by what factor?

In an elastic solid there is a direct proportionality between strain and:

If it takes 8.0 N to stretch a spring 6.0 cm, and if the spring is then cut in half, what force does it take to stretch one of the halves 3.0 cm?

Consider the curve x = A sin(kt), with A > 0. At which point on the graph is it possible that t = 0?

For a mass suspended on a spring in the vertical direction, the time for one complete oscillation will depend on:

A pendulum on the Earth has a period T. The acceleration due to gravity on Mars is less than that on the Earth, and the acceleration due to gravity on the Moon is even less. Where would the period of an identical pendulum be the least?

The bulk modulus of a material, as a meaningful physical property, is applicable to which of the following?

The quantity "stress" expressed in terms of the fundamental quantities (mass, length, time) is equivalent to:

Suppose there is an object for which F = +kx. What will happen if the object is moved away from equilibrium (x = 0) and released?

If a long spring with spring constant k is cut into 3 equal lengths, what is the spring constant of each of the 3 shorter springs?

A uniform pressure of 21 * 105 N/m2 is applied to all six sides of a copper cube. What is the percentage change in volume of the cube? (for copper, B = 14 * 1010 N/m2)

Introduction

Motion, Forces, and Newtons Laws

Forces and Motion in One Dimension

Forces and Motion in Two and Three Dimensions

Circular Motion and Gravitation

Work and Energy

Momentum, Impulse, and Collisions

Rotational Motion

Energy and Momentum of Rotational Motion

Fluids

Waves

Sound

Temperature and Heat

Gases and Kinetic Theory

Thermodynamics

Electric Forces and Fields

Electric Potential

Electric Currents and Circuits

Magnetic Fields and Forces

Magnetic Induction

Alternating-Current Circuits and Machines

Electromagnetic Waves

Geometrical Optics

Wave Optics

Applications of Optics

Relativity

Quantum Theory

Atomic Theory

Nuclear Physics

Physics in the 21st Century

Filters

A uniform pressure of 21 * 10⁵ N/m² is applied to all six sides of a copper cube. What is the percentage change in volume of the cube? (for copper, B = 14 * 10¹⁰ N/m²)