Who provided a basis for the study of dynamics?
What are the units of force, in terms of fundamental units?
Inertia is the tendency of an object to remain at constant
Which of the following constitutes an inertial reference frame?
What is the weight on earth of a 50 kg person?
What is the weight of a 50 kg person in outer space?
In what way are force and acceleration related?
A 10 kg mass experiences a force of 20 N. What is its acceleration?
An object with mass 2 kg moves with a velocity of 10 m/s. What is the net force
on the body?
What are the units of weight, in terms of fundamental units?
An object of mass 1 kg experiences two equal and opposite forces, each of 10 N.
What is its acceleration?
A force of 3 N and a force of 4 N act together to produce a resultant force of 5
N. What must be the angle between them?
The net force from two distinct forces is at a maximum when the angle between
Three forces, each separated from one another by
yield a net force
What can be said about the magnitude of the forces?
An object is said to be at equilibrium if
A man pushes on a 10 kg crate with a force of 50 N. What force does the man
What is constant for a freely falling object?
The acceleration due to gravity on the moon is 1/6 the value of that on earth.
What is the weight of a 100 kg man on the moon?
Which of Newton's Laws relate the force of two mutually interacting bodies?
Which of Newton's Laws define the concept of inertia?
Two surfaces are in contact. The normal force between them always points
A 10 kg mass rests on an inclined plane with angle of elevation of
What is the magnitude of the normal force?
The normal force is a direct consequence of which of Newton's Laws?
Frictional force is the result of what kind of fundamental force?
Frictional force always acts in what direction relative to the motion of one
body relative to the other?
A 10 kg block is at rest on a horizontal table. The coefficient of static
friction between them is .5. What is the frictional force acting upon the block?
A 10 kg block lies at rest on a table, with a coefficient of static friction
between them of .5. A horizontal force is then applied of magnitude 50 N. What
is the frictional force acting upon the block after the force is applied?
The coefficient of static friction is related to the coefficient of kinetic
friction in what way?
A block moves across a tabletop with a certain speed and experiences a kinetic
frictional force. What happens to the frictional force when the speed of the
block is doubled?
A 10 kg block lies at rest on table. The coefficient of static friction and the
coefficient of kinetic friction between the block and the table are .5 and .25
respectively. A 50 N force is applied horizontally to the block. What is the
magnitude of the frictional force applied to the block?
See the above problem. What is the acceleration of the block while the force is
being applied, in m/s
Kinetic frictional force is always directly proportional to what other force?
A 2 kg block is moving with constant velocity across a table with a coefficient
of kinetic friction of .5. How much external force is being applied to the
The net force on a massless rope is always
A 10 kg block is held in equilibrium by a rope hanging vertically from the
ceiling. What is the tension in the rope?
A man attaches a rope to a 20 kg block, pulling it across a floor with constant
velocity. The coefficient of kinetic friction between the block and the floor is
.5. What is the tension in the rope?
A cube has sides of area 2 cm
, 3 cm
and 4 cm
. What side of the cube
will experience the least friction when moved across a rough surface?
A 10 kg block is placed on a floor, but attached to a rope via a pulley system.
A person pulls on the rope until the tension in the rope is 90 N. What is the
normal force exerted by the floor at this point?
If the normal force between two surfaces is doubled, the coefficient of static
A 10 kg block is pushed horizontally against a vertical wall, with coefficient
of static friction of .25 between the block and the wall. With what force must
the block be pushed against the wall in order to keep the block from falling?
When traveling in uniform circular motion, all of the following stay constant
When moving in uniform circular motion, the acceleration of a particle is always
A particle is accelerated in uniform circular motion at a rate of 2 m/s
around a circle of radius of 18 m. What is the particle's speed, in m/s?
A 10 m rope has a maximum tension of 20 N. What is the most mass it can keep in
uniform circular motion at a velocity of 10 m/s?
Centripetal force always points in what direction?
When a car goes around a curve, the centripetal force is provided by
Which of the following is NOT an example of uniform circular motion?
How much must the centripetal force change if the speed around a circle is
How much must the centripetal force change if the radius of the circle is
Which of Newton's Laws do NOT apply to uniform circular motion?