Question

A block of weight w = 30.0 N sits on a frictionless inclined plane, which makes an angle θ = 33.0 ∘ with respect to the horizontal, as shown in the figure. (Figure 1)A force of magnitude F = 16.3 N , applied parallel to the incline, is just sufficient to pull the block up the plane at constant speed.

PART A The block moves up an incline with constant speed. What is the total work WtotalWtotalW_total done on the block by all forces as the block moves a distance LLL = 5.00 mm up the incline? Include only the work done after the block has started moving at constant speed, not the work needed to start the block moving from rest.Express your answer numerically in joules.

PART B What is WgWgW_g, the work done on the block by the force of gravity w⃗ w→w_vec as the block moves a distance LLL = 5.00 mm up the incline?Express your answer numerically in joules.

PART C What is WFWFW_F, the work done on the block by the applied force F⃗ F→F_vec as the block moves a distance LLL = 5.00 mm up the incline?Express your answer numerically in joules.

PART D What is WNWNW_N, the work done on the block by the normal force as the block moves a distance LLL = 5.00 mm up the inclined plane?Express your answer numerically in joules.

Answer #1

A block of weight w = 25.0 N sits on a frictionless
inclined plane, which makes an angle θ = 20.0 ∘ with
respect to the horizontal, as shown in the figure. (Figure 1)A
force of magnitude F = 8.55 N , applied parallel to the
incline, is just sufficient to pull the block up the plane at
constant speed.
Part B
What is Wg, the work done on the block by the force of
gravity w⃗ as the block moves...

A block of weight w = 30.0 N sits on a frictionless inclined
plane, which makes an angle θ = 35.0 ∘ with respect to the
horizontal, as shown in the figure. (Figure 1) A force of magnitude
F = 17.2 N , applied parallel to the incline, is just sufficient to
pull the block up the plane at constant speed. PLEASE PUT ALL
ANSWERS IN JOULES
Part A
The block moves up an incline with constant speed. What is...

A block of mass4 kgkg is dragged up an inclined
plane. The plane is inclined at an angle of 45degrees to the
horizontal. The coefficient of kinetic friction between the block
and the plane is 0.5.
What force is needed to drag the block up the plane at a
constant speed?
What force is needed to accelerate the block up the plane at a
rate of 5 meters per second squared?
If the force acting in Part-B drags the block by...

2. A block slides down a plane inclined at 35o with
respect to the horizontal, with coefficient of kinetic friction
0.2. Find the ratio of the time taken to slide down the plane
starting from rest, compared to the time it would take to slide
down the plane if it were frictionless.
3. A 20 kg block slides frictionlessly down an inclined plane
that is 2.8 m long and 1.2 m high. A person pushes up against the
block, parallel...

A block with mass ?1 is placed on an inclined plane with slope
angle ? and is connected to a hanging block with mass ?2 by a cord
passing over a small, frictionless pulley. The coefficient of
static friction is ?s, and the coefficient of kinetic friction is
?k.
(a) Find the value of ?2 for which the block of mass ?1 moves up
the plane at a constant speed once it is set in motion
(b) Find the value...

A block weighing 87.5 N rests on a plane inclined at 25.0° to
the horizontal. A force F is applied to the object at
50.0° to the horizontal, pushing it upward on the plane. The
coefficients of static and kinetic friction between the block and
the plane are, respectively, 0.377 and 0.156.
(a) What is the minimum value of F that will prevent
the block from slipping down the plane?
N
(b) What is the minimum value of F that...

A 6.20 kg block is pushed 9.50 m up a smooth 36.0 ∘inclined
plane by a horizontal force of 70.0 N . If the initial speed of the
block is 3.50 m/s up the plane.
Calculate the initial kinetic energy of the block.
Calculate the work done by the 70.0 N force.
Calculate the work done by gravity.
Calculate the work done by the normal force.
Calculate the final kinetic energy of the block.
Please explain

A block of weight 3.8 N is launched up a 30 ∘ inclined plane of
length 2.45 m by a spring with spring constant 2.35 kN/m and
maximum compression 0.10 m . The coefficient of kinetic friction is
0.50.
-Does the block reach the top of the incline?
-If so, how much kinetic energy does it have there; if not, how
close to the top, along the incline, does it get?

A block with mass m=4.7 kg is on a frictionless incline surface
(incline angle =44 degree). An external force of F is applied
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speed upward, find the magnitude of the applied force. Take g=9.81
m/s2and round your answer to 1 decimal place.

A 2.00-kg block on a 30° inclined plane slides down at a
constant speed of 3.00 m/s. What is the power of the frictional
force in moving the block?

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