Question
In: Physics
(a) (15 pts) A net force is applied to a mass m that is initially at...
(a) (15 pts) A net force is applied to a mass m that is initially at rest on a level frictionless surface. The force varies with position and is given by F(x)=Ax3/2. The force is applied tothemassfrompositionsx=0tox=d. Aftertheforcestopsacting,the mass then slides throughalevelfrictionpatchwithcoefficientoffriction µk.
How far does the mass travel through the friction patch before
coming to rest? Put your answer in terms of m,g,d, µk,and A.
(b) (5 pts) Now, suppose that instead of the position-varying force
acting on the mass, a time-varyingnetforceF(t)=At3/2 acted on the
block from time st =0tot =t1. After the time-varying force stopped
acting, then the block went through the same friction patch. For
this new scenario, what would be your approach to solving this
problem? Briefly explains using equations and/or technical words. Be
specific to earn full credit. Solving part (b) is not required for
full credit.
Solutions
genius_generous answered 2 years agoRelated Solutions
Starting at time t=0, net force F1 is applied to an object that is initially at...
Starting at time t=0, net force F1 is applied to an
object that is initially at rest. If the force remains constant
with magnitude F1 while the object moves a distance d,
the final speed of the object is v1. What is the final
speed v2 (in terms of v1) if the net force is
F2=2F1 and the object moves the same
distance d while the force is being applied? Express your answer in
terms of v1.
The figure shows an initially stationary block of mass m on a floor. A force of...
The figure shows an initially stationary block of mass
m on a floor. A force of magnitude 0.500mg is
then applied at upward angle θ = 20°. What is the
magnitude of the acceleration of the block across the floor if
(a) μs = 0.630 and
μk = 0.530 and (b)
μs = 0.430 and μk =
0.320?
(a)
Number
Enter your answer in accordance to item (a) of the question
statement
Units
Choose the answer from the menu in...
The figure shows an initially stationary block of mass m on a floor. A force of...
The figure shows an initially stationary block of mass
m on a floor. A force of magnitude 0.500mg is
then applied at upward angle ? = 20
The figure shows an initially stationary block of mass m on a floor. A force of...
The figure shows an initially stationary block of mass
m on a floor. A force of magnitude 0.500mg is
then applied at upward angle ? = 20
1.The same horizontal force, of magnitude F, is applied to two different blocks, of mass m...
1.The same horizontal force, of magnitude F, is applied
to two different blocks, of mass m and 3m The
blocks move on a frictionless surface and both blocks begin from
rest. If each block moves the same distance as the force is
applied, which one of the following sentences is true?
A)The lighter block acquires 9 times as much kinetic energy as
the heavier block.
B)The two blocks acquire the same kinetic energy.
C)The heavier block acquires 3 times as...
A rifle of mass M is initially at rest. A bullet of mass m is fired...
A rifle of mass M is initially at rest. A bullet of mass m is
fired from the rifle with a velocity v relative to the ground.
Which one of the following expressions gives the velocity of the
rifle relative to the ground after the bullet is fired?
A) −mv
B) mv
C) Mv/m
D) mv/M
A bullet of mass m=20 gr is fired into a block of mass M=5 kg initially...
A bullet of mass m=20 gr is fired into a block of mass M=5 kg
initially at rest at the edge of a frictionless table of height
h=0.90 m. The bullet remains in the block and the block lands a
distance d=0.68 m from the bottom of the table. Picture1
a)Determine the initial velocity of the bullet. vi= m/s b)
Determine the loss of kinetic Energy during the collision. ΔK =
J.
A bullet of mass m=11 gr is fired into a block of mass M=1 kg initially...
A bullet of mass m=11 gr is fired into a block of mass M=1 kg
initially at rest at the edge of a frictionless table of height
h=1.10 m. The bullet remains in the block and the block lands a
distance d=0.67 m from the bottom of the table.
a)Determine the initial velocity of the bullet.
b) Determine the loss of kinetic Energy during the
collision.
A bullet of mass m=12 gr is fired into a block of mass M=1 kg initially...
A bullet of mass m=12 gr is fired into a block of mass M=1 kg
initially at rest at the edge of a frictionless table of height
h=1.00 m. The bullet remains in the block and the block lands a
distance d=0.60 m from the bottom of the table. a)Determine the
initial velocity of the bullet. vi= m/s b) Determine the loss of
kinetic energy during the collision. ΔK = J
A bullet of mass m=14 gr is fired into a block of mass M=1 kg initially...
A bullet of mass m=14 gr is fired into a block of mass M=1 kg
initially at rest at the edge of a frictionless table of height
h=1.10 m. The bullet remains in the block and the block lands a
distance d=0.65 m from the bottom of the table.
Determine the initial velocity of the bullet.
Determine the loss of kinetic Energy during the collision
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