Mech

Front 1

Newton's second law of motion pertains to the behavior of objects for which all existing forces are ___________

Back 1

not balanced

Front 2

The second law states that the acceleration of an obiect is dependent upon two variables - the __________ acting upon the object and the _______ of the object.

Back 2

Net force, mass

Front 3

The acceleration of an object depends directly upon the ___________ acting upon the object, and inversely upon the ________ of the object.

Back 3

net force, mass

Front 4

As the force acting upon an object is increased, the acceleration of the object is __________. As the mass of an object is increased, the acceleration of the object is ___________.

Back 4

increased, decreased

Front 5

The ____________ of an object as produced by a net force is directly proportional to the ___________ of the net force, in the same direction as the __________, and inversely proportional to the ________ of the object.

Back 5

acceleration, magnitude, net force, mass

Front 6

The net force is equated to the product of the _______ times the ______________.

Back 6

mass, acceleration

Front 7

The ______________of a particle with mass m moving with velocity v.

Back 7

linear momentum

Front 8

____________ is a vector.

Back 8

Linear momentum

Front 9

When giving the _______________ of a particle you must specify its magnitude and direction.

Back 9

Linear momentum

Front 10

The momentum of a particle is related to the net force on that particle in a simple way; since the mass of a particle _________________.

Back 10

Remains constant

Front 11

___________________ is a useful quantity for cases where we have a few particles (objects) which interact with each other but not with the rest of the world. Such a system is called an ________________.

Back 11

Linear momentum, isolated system

Front 12

When a particle moves freely then interacts with another system for a (brief) period and then moves freely again, it has a _______________ in momentum; we define this change as the __________ of the interaction force.

Back 12

Definite change, impulse

Front 13

When we talk about a collision (between two particles, say) we mean that two particles are moving _________ through space until they get ________ to one another; then, for a short period of time they exert ______________ on each other until they move apart and are again moving freely.

Back 13

freely, close, strong force

Front 14

While the total momentum is conserved for a system of ______________________, the mechanical energy may or may not be conserved. If the mechanical energy (usually meaning the total kinetic energy) is the same before and after a collision, we say that the collision is __________. Otherwise we say the collision is __________.

Back 14

isolated colliding particles, elastic, inelastic

Front 15

If two objects collide, stick together, and move off as a combined mass, we call this a _______________. One can show that in such a collision more ______________ is lost than if the objects were to bounce off one another and move off separately.

Back 15

perfectly inelastic collision, kinetic energy

Front 16

For a system of particles there is a special point in space known as the ______________ which is of great importance in describing the overall motion of the system. This point is a _______________ of the positions of all the mass points.

Back 16

center of mass, weighted average

Front 17

Defining the ________________, L of the system of particles as the sum of the _______________ of the various particles of the system.

Back 17

linear momentum, linear momenta

Front 18

Defining the ________________, L of the system of particles as the sum of the _______________ of the various particles of the system.

Back 18

linear momentum, linear momenta

Front 19

. It is the rotational analogue of linear momentum and measured as the product of linear momentum and the ______________ of its line of axis of rotation.

Back 19

Angular momentum, perpendicular distance

Front 20

Defining the ________________, L of the system of particles as the sum of the _______________ of the various particles of the system.

Back 20

linear momentum, linear momenta

Front 21

. It is the rotational analogue of linear momentum and measured as the product of linear momentum and the ______________ of its line of axis of rotation.

Back 21

Angular momentum, perpendicular distance

Front 22

The resustant and the moment resultant about the fixed point of the external forces are respectively equal to the _________________ of the linear momentum and of the _________________ of the system of particles.

Back 22

rates of change, angular momentum

Front 23

Defining the ________________, L of the system of particles as the sum of the _______________ of the various particles of the system.

Back 23

linear momentum, linear momenta

Front 24

. It is the rotational analogue of linear momentum and measured as the product of linear momentum and the ______________ of its line of axis of rotation.

Back 24

Angular momentum, perpendicular distance

Front 25

The resustant and the moment resultant about the fixed point of the external forces are respectively equal to the _________________ of the linear momentum and of the _________________ of the system of particles.

Back 25

rates of change, angular momentum

Front 26

The ______________ of the system is the point G defined by the position vector r.

Back 26

mass center

Front 27

Defining the ________________, L of the system of particles as the sum of the _______________ of the various particles of the system.

Back 27

linear momentum, linear momenta

Front 28

. It is the rotational analogue of linear momentum and measured as the product of linear momentum and the ______________ of its line of axis of rotation.

Back 28

Angular momentum, perpendicular distance

Front 29

The resustant and the moment resultant about the fixed point of the external forces are respectively equal to the _________________ of the linear momentum and of the _________________ of the system of particles.

Back 29

rates of change, angular momentum

Front 30

The ______________ of the system is the point G defined by the position vector r.

Back 30

mass center

Front 31

When properties associated with the mass of the particles are being discussed, and as the center of gravity of the system when properties associated with the _________ of the particles are being considered. Partiles located outside the gravitational field of the earth, for example, have a mass but no __________. We can then properly refer to their mass center, but obviously not to their ______________.

Back 31

weight, weight, center of gravity

Front 32

If no external forces are acting on the two stages, the linear and angular momentum of the system will be ____________.

Back 32

conserved

Front 33

If no external forces are acting on the two stages, the linear and angular momentum of the system will be ____________.

Back 33

conserved

Front 34

The concept of __________________ can be applied to the analysis of the motion of the center mass G of a system of particles and to the analysis of the motion of the system about G.

Back 34

conservation of momentum

Front 35

If no external forces are acting on the two stages, the linear and angular momentum of the system will be ____________.

Back 35

conserved

Front 36

The concept of __________________ can be applied to the analysis of the motion of the center mass G of a system of particles and to the analysis of the motion of the system about G.

Back 36

conservation of momentum

Front 37

This _______________________ occurs when the resultant of the external forces acting on the particles of the system is zero.

Back 37

conservation of momentum

Front 38

A motion is said to be a _____________ if any straight line inside the body maintains the same orientation during the motion.

In a translation, all of the particles forming the body move along parallel paths. If these paths are straight lines, the motion is called ___________________. If the paths are curved lines, the motion is called _______________.

Back 38

translation, rectilinear translation, curvilinear translation

Front 39

In this motion, the particles forming the rigid body move in parallel planes along circles centered on the same fixed axis. If this axis, called the ________________, intersects the rigid body, the particles located on the axis have _____________ and _____________.

Back 39

axis of rotation, zero velocity, zero acceleration

Front 40

Many other types of plane motion can occur, i.e., motions in which all the particles of the body move in a single plane. Any plane motion that is neither a rotation nor a translation is referred to as _________________.

Back 40

general plane motion

Front 41

The three-dimensional motion of a rigid body attached at a fixed point O, such as the motion of a top on a rough floor, is known as __________________.

Back 41

motion about a fixed point