Question

A 0.400kg0.400kg block is *initially at rest* on a
horizontal surface, and is attached to an initially unstreteched
spring with a force constant of 2.00N/m2.00N/m. The coefficient of
kinetic friction between the block and the surface is 0.4000.400. A
constant force of 2.30N2.30N to the right is applied to the
block.

(A) Draw a free body diagram showing all forces on the block as it moves to the right.

Determine

(B) the initial Kinetic Energy of the block: J,
and

(C) the initial Potential Energy (i.e. the initial energy stored in
the spring): J

The block moves 0.600 m to the right of its starting position.
Determine

(D) the work done by the applied force: J,

(E) the work done by the force of friction : J,

(F) the work done by the normal force: J and,

(G) the work done by the force of gravity: J.

(H) the final Potential Energy (i.e. the final energy stored in the spring): J

Using work and energy methods and your results above,
determine

(I) the final Kinetic Energy of the box: J, and

(J) the final speed of the box: J, and

Answer #1

A 0.400kg0.400kg block is initially at rest on a
horizontal surface, and is attached to an initially unstreteched
spring with a force constant of 2.00N/m2.00N/m. The coefficient of
kinetic friction between the block and the surface is 0.4000.400. A
constant force of 2.30N2.30N to the right is applied to the
block.
(A) Draw a free body diagram showing all forces on the block as
it moves to the right.
Determine
(B) the initial Kinetic Energy of the block: J,
and
(C)...

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a. Draw a free-body diagram of the situation.
b. Find the work done by the 12 N force on the block to move the
block 3m?
c. Find the work done by the force of friction on the block when
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d. Use the work-energy principle to find...

A 36.5 kg box initially at rest is pushed 4.25 m along a rough,
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If the coefficient of friction between box and floor is 0.300, find
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J
(b) the increase in internal energy in the box-floor system due to
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J
(c) the work done by the normal force
J
(d) the work done by the gravitational force
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A 6.53-kg block initially at rest is pulled to the right along a
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he block in the figure lies on a horizontal frictionless
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18.
A 34.5 kg box initially at rest is pushed 5.75 m along a rough,
horizontal floor with a constant applied horizontal force of 150 N.
If the coefficient of friction between box and floor is 0.300, find
the following.
(a) the work done by the applied force
___J
(b) the increase in internal energy in the box-floor system due to
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___J
(c) the work done by the normal force
___J
(d) the work done by the gravitational force...

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_____.
a. 1.8 m/s
b. 3.5 m/s
c. 2.8 m/s
d. 5.3 m/s
Suppose the force is applied at an angle. At what angle should
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A 2.60 kg block is initially at rest on a horizontal surface. A
horizontal force ModifyingAbove Upper F With right-arrow of
magnitude 6.59 N and a vertical force ModifyingAbove Upper P With
right-arrow are then applied to the block (see the figure). The
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right-arrow is...

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