Question

In the figure, a force P→ acts on a block weighing 47.0 N. The block is initially at rest on a plane inclined at angle θ = 17.0° to the horizontal. The positive direction of the x axis is up the plane. The coefficients of friction between block and plane are μs = 0.520 and μk = 0.350. In unit-vector notation, what is the frictional force on the block from the plane when P→ is (a) (-5.40 N) î , (b) (-8.20 N) î , and (c) (-15.1 N) î ?.

Answer #1

In the figure, a 5.40 kg block is sent sliding up a plane
inclined at θ = 37.0° while a horizontal force
of magnitude 50.0 N acts on it. The coefficient of
kinetic friction between block and plane is 0.330. What are the
(a) magnitude and (b) direction
(up or down the plane) of the block's acceleration? The block's
initial speed is 4.30 m/s. (c) How far up the
plane does the block go? (d) When it reaches its
highest...

The figure shows an initially stationary block of mass m on a
floor. A force of magnitude 0.500mg is then applied at upward angle
θ = 20°. What is the magnitude of the acceleration of the block
across the floor if (a) μs = 0.620 and μk = 0.540 and (b) μs =
0.440 and μk = 0.310

The figure shows an initially stationary block of mass m on a
floor. A force of magnitude 0.500mg is then applied at upward angle
θ = 20°. What is the magnitude of the acceleration of the block
across the floor if (a) μs = 0.630 and μk = 0.530 and (b) μs =
0.430 and μk = 0.320?

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...

As shown in Figure 1, a block (mass: 2.4 kg) is initially at
rest near the top of an inclined plane, oriented at a 25° angle
above the horizontal. The coefficients of static and kinetic
friction along the incline are 0.2 and 0.1, respectively.
(a) Just after the block is released from rest, draw a free-body
diagram for it. (Assume that the block is moving after being
released from rest.)
(b) Determine the magnitude of the normal force acting on...

Body A in the figure weighs 96 N, and body B
weighs 67 N. The coefficients of friction between A and
the incline are μs = 0.44 and
μk = 0.26. Angle θ is 28°. Let the
positive direction of an x axis be up the incline. What is the
acceleration of A if A is initially
(a) at rest, (b) moving up the
incline, and (c) moving down the incline?

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...

A horizontal force of magnitude F = 100 N is applied to slide a
block of mass m = 5 kg up a ramp inclined at θ = 37 o to the
horizontal. If the coefficient of kinetic friction between the
block and the ramp is 0.4, what will be the acceleration of the
block?

A force of 100 N is required to just set in motion a concrete
block weighing 150 N on a flat surface. What is the coefficient of
limiting static friction between the concrete and the surface
material?

The block of M=5kg, modeled as a particle, rests on the inclined
surface that makes an angle of θ with the horizontal ground. The
static friction coefficient between the block and the surface is
μs=1/3. A force of P is horizontally applied on the block. Take
g=10m/s/s for convenience.
1. Draw a free body diagram.
2. Write each force expressed in cartesian vector form.
3. Write down scalar compontent form of equilibrium equations in
x and y direction.
4. Find...

ADVERTISEMENT

Get Answers For Free

Most questions answered within 1 hours.

ADVERTISEMENT

asked 33 minutes ago

asked 34 minutes ago

asked 37 minutes ago

asked 37 minutes ago

asked 39 minutes ago

asked 58 minutes ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago

asked 1 hour ago