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)...

A 6.0-kg block initially at rest is pulled to the right along a
horizontal surface with a force of 12 N. The force of kinetic
friction is 3N.
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
the block was moved 3m?
d. Use the work-energy principle to find...

A 36.5 kg box initially at rest is pushed 4.25 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
friction
J
(c) the work done by the normal force
J
(d) the work done by the gravitational force
J...

A 6.53-kg block initially at rest is pulled to the right along a
horizontal surface by a constant force of 125 N applied at an angle
θ above the horizontal. The coefficient of kinetic friction between
the block and the horizontal surface is 0.150. At what angle θ
above the horizontal surface should the force be applied to achieve
the largest possible speed after the block has moved 5.00 m to the
right?

he block in the figure lies on a horizontal frictionless
surface, and the spring constant is 50 N/m. Initially, the spring
is at its relaxed length and the block is stationary at position x
= 0. Then an applied force with a constant magnitude of 4.0 N pulls
the block in the positive direction of the x axis, stretching the
spring until the block stops. When that stopping point is reached,
what are (a) the position of the block, (b)...

A 4.0-kg block initially at rest is pulled to the right along a
horizontal surface by a constant horizontal force of 12 N.
Find the speed of the block after it has moved 3.0 m if the
surfaces in contact have a coefficient of kinetic friction of 0.17
_____.
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
the force be applied to achieve the...

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
friction
___J
(c) the work done by the normal force
___J
(d) the work done by the gravitational force...

A 3.0-kg block sliding on a frictionless horizontal surface is
accelerated by a compressed spring. If the 200 N/m spring is
initially compressed 10 cm, determine (a) the potential energy
stored in the spring. As the block leaves the spring, find (b) the
kinetic energy of the block, and (c) the velocity of the block.

Let's imagine a block on a sheet of ice, with negligible
friction. The block has a mass of 5.00 kg. The block is currently
moving to the right at 3.00 m/s. Let's say a rope is attached to
this block, and it pulls horizontally on the block, also to the
right, with a force of 12.0 N. With this force applied, the block
moves a distance of 3.00 m to the right. How fast is the block
moving at the...

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
coefficients of friction for the block and surface are ?s = 0.4 and
?k = 0.25. Determine the magnitude of the frictional force acting
on the block if the magnitude of ModifyingAbove Upper P With
right-arrow is...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 5 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 2 hours ago

asked 3 hours ago

asked 3 hours ago