Question

- A 8.0kg block is pulled along a horizontal frictionless floor
by a cord that exerts a force
*T* = 10N at an angle of 30^{o}^{}above the horizontal as shown below. Draw a free body diagram for each scenario below.

- What is the acceleration of the block? Include FBD
- The force
*T* is slowly increased. What is the value of*T* just before the block is lifted off the floor? Include FBD - What is the acceleration of the block just before it is lifted off the floor? Include FBD

Answer #1

Free body diagram:

A 4.82 kg block located on a horizontal frictionless floor is
pulled by a cord that exerts a force F=12.4N at an angle
theta=25.0degrees above the horizontal, as shown. What is the
magnitude of the acceleration of the block when the force is
applied?
What is the horizontal speed of the block 4.30 seconds after it
starts moving?
What is the magnitude of the normal force acting on the block
when the force F is acting on it?
If, instead,...

A block with mass 6.00 kg slides on a horizontal floor as it is
pulled with a string by a force of 50.0 N at an angle of 30.0° with
the horizontal.
The force of friction between the floor and the block is 10
N.
A. Draw below a free body diagram for the block. Label all the
forces and describe each force: name and source of the force.
B. Find the y-component of the net force. Explain your
answer....

A
7.00 kg block sits on the floor at rest. Block is being pulled
across a frictionless floor with a force F=14 N at an angle of 35
degrees. What is the magnitude of block’s acceleration?

A mass m = 13 kg is pulled along a horizontal floor, with a
coefficient of kinetic friction μk = 0.07, for a
distance d = 5.1 m. Then the mass is continued to be pulled up a
frictionless incline that makes an angle θ = 33° with the
horizontal. The entire time the massless rope used to pull the
block is pulled parallel to the incline at an angle of θ = 33°
(thus on the incline it is...

A box of mass 12 kg is placed on the horizontal floor. The floor
is not frictionless. If someone pushes on to the box with a force F
= 40 N which is directed at an angle of 37.0 o below the
horizontal and the box slides along the floor. What is the normal
force that the floor exerts on the box?

A mass m = 12 kg is pulled along a horizontal floor with NO
friction for a distance d =7.2 m. Then the mass is pulled up an
incline that makes an angle θ = 30° with the horizontal and has a
coefficient of kinetic friction μk = 0.49. The entire
time the massless rope used to pull the block is pulled parallel to
the incline at an angle of θ = 30° (thus on the incline it is
parallel...

A mass m = 12 kg is pulled along a horizontal floor with NO
friction for a distance d =7.2 m. Then the mass is pulled up an
incline that makes an angle θ = 30° with the horizontal and has a
coefficient of kinetic friction μk = 0.49. The entire
time the massless rope used to pull the block is pulled parallel to
the incline at an angle of θ = 30° (thus on the incline it is
parallel...

a large box whose mass is 20.0 kg rests on the frictionless
floor. A mover pushes on the box with a force of 250 N at an angle
35.0 below the horizontal. Draw the box's free body diagram and
calculate the acceleration of the box
b) if the kinetic friction coefficient is 0.1 between the box
and floor. Draw the box's free body diagram and re-calculate the
acceleration of the box

A 10.0kg box accelerates across the floor at 1.5m/s^2 when
pulled by a force of 20N acting horizontally, The same box is then
pulled by the same force acting at an elevation of 40 degrees.
A. Draw the free-body diagrams for both situations.
B. Determine the coefficient of sliding friction.
C. Calculate the acceleration of the box if the force is directed
at 40 degrees above the horizontal. Draw the free-body diagram for
this situation.

A block of mass 9.1 kg rests on a horizontal frictionless floor,
and is connected to a vertical wall by a spring of force constant
205 N/mN/m as shown in the figure. When the spring is in its
equilibrium position (neither stretched nor compressed), the block
just touches a second lighter block of mass 3.4 kg at rest on the
frictionless floor. The spring is now compressed by 0.12 mm (only
the heavier mass is moved towards the wall) and...

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