Question

Three boxes are lined up so that they are touching each other on a nearly frictionless plane. Box A has a mass of ?A=21.5 kg,mA=21.5 kg, box B has a mass of ?B=28.0 kg,mB=28.0 kg, and box C has a mass of ?C=55.0 kg.mC=55.0 kg. An external force ?⃗ F→ pushes on box A toward the right, and the force that box B exerts on box C has a magnitude of 201 N.201 N. Ignore friction.

What is the magnitude of the acceleration ?a of the boxes?

What is the magnitude ?F of the external force?

Answer #1

Three boxes, A, B, and C, are placed on a frictionless surface
as shown in the diagram below.
If you push on box A with a force of 8.25 N, find the contact
force (in N) between each pair of boxes. Here
mA = 6.80 kg, mB = 3.20 kg,
and mC = 1.50 kg.
contact force between A and B N
contact force between B and C N

Blocks of mass 4, 8, and 20 kg are lined up from left to right
in that order on a frictionless surface so each block is touching
the next one. A rightward-pointing force of magnitude 18 N is
applied to the left-most block.
Suppose now that the left-right order of the blocks is reversed.
Now find the magnitude of the force that the leftmost block exerts
on the middle one?
F'middle, left =???

Boxes AA and BB are in contact on a
horizontal, frictionless surface (Figure 1). Box AA has
mass 23.0 kgkg and box BB has mass 4.0 kgkg . A horizontal
force of 110 NN is exerted on box AA.
What is the magnitude of the force that box AA exerts
on box BB?

A Professor pushes 3 boxes in a row to the right with a force of
53 Newtons. The first box is empty and has a mass of 1.2 kg, the
second box is full of hats and has a mass of 2.0 kg, and the third
box is full of fruit and has a mass of 105 kg.
A. What is the magnitude of the force that box 2 applies to box
3? (force diagrams may be helpful here)
B....

1a. a box of dirty money (mass m1
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1b. three blocks attached by cords that loop over frictionless
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A 12.0-kg box resting on a horizontal, frictionless surface is
attached to a 5.00-kg weight by a thin, light wire that passes
without slippage over a frictionless pulley. The pulley has the
shape of a uniform solid disk of mass 2.40 kg and diameter 0.420
m.
A)After the system is released, find the horizontal tension in
the wire.
B) After the system is released, find the vertical tension in
the wire.
C)After the system is released, find the acceleration of...

1-
Two boxes, one of 4.00 kg and the other one of 6.00 kg they rest on
a horizontal surface wothout friction. The boxes are unided by a
delicate rope. A women aplies am horizontal force F to the box that
has 6.00 kg and it bestow both acelerations of 2.50 m/s2. Determine
the magnitud of F force and the Tence rope of T
2- The blocks of mass A & B of the figure are 20.0kg &
10.0 kg....

In a box, four boxes act on an object and have the following
directions and magnitudes; A = 30.4 N East, B = 55.4 N North, C =
98.7 N West, and D = 77.1 N South East.
What is the magnitude of the net force (in N) on the
object?
What is direction of the force? (Clockwise from the positive y
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A crate with a mass of 8.25 kg starts from rest at the top of a
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A 12.0-kg box resting on a horizontal, frictionless surface is
attached to a 5.00-kg weight by a thin, light wire that passes
without slippage over a frictionless pulley (the figure (Figure 1)
). The pulley has the shape of a uniform solid disk of mass 2.00 kg
and diameter 0.520 m .
Part A
After the system is released, find the horizontal tension in the
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Part B
After the system is released, find the vertical tension in the
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A friend has given you a special gift, a box of mass 10.0 kg
with a mystery surprise inside. The box is resting on the smooth
(frictionless) surface of a table.
a. determine the weight of the box and the normal force exerted
on it by the table.
b. now your friend pushes down on the box with a force of 40.0
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table.
c. If your friend pulls...

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