Homework Statement
A block sits on an inclined plane, which is slowly being raised. The block remains motionless until the angle the plane makes with the horizontal is 23°. At this angle, the block begins to slide down the plane. What is the coefficient of static friction between the plane...
A 2.00 kg block is placed against a spring on a frictionless 30.0° incline (Fig. 8-33). (The block is not attached to the spring.) The spring, whose spring constant is 19.6 N/cm, is compressed 16.0 cm and then released.
(a) What is the elastic potential energy of the compressed spring...
Ok so I am having trouble calculating the speed of a box as it travels down a incline.
I was Given 22 degree angle and the coefficient of friction (kinetic) is .22. Height of 9.10m (from rest at the top).
I calculated acceleration while it travels down the slop and got 1.6721.
I next need...
[a]1. Homework Statement [/b]
The block shown in Fig. 5-27 lies on a smooth plane tilted at an angle = 25.5° to the horizontal, with µk = 0.17.
Figure 5-27
(a) Determine the acceleration of the block as it slides down the plane.
________ m/s2 (down the plane)
(b) If the block...
A solid sphere of uniform density starts from rest and rolls without slipping a distance of d = 3.9 m down a q = 35° incline. The sphere has a mass M = 4.6 kg and a radius R = 0.28 m.
https://online-s.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?courses/phys101/fall07/homework/08/03/3.gif...
Homework Statement
a man pulls a 10 kg box up an incline at a constant speed to a vertical height of 5 m. what is the net work being done?
Homework Equations
w= fd
The Attempt at a Solution
i know in the plane perpendicular to the surface there is no net work done because all...
Homework Statement
A block of mass m = 2.00 kg is released from rest at h = 0.500 m from the surface of a table, at the top of a θ = 35.0° incline as shown below. The frictionless incline is fixed on a table of height H = 2.00 m.
How much time has elapsed between when the block is...
Homework Statement
Object weighing 100 grams is on a surface which is inclined to an angle where the mass just overcame the coefficient of friction (which is unknown) and started sliding down. Angle was measured to be 21 degrees to the horizontal.
What I want to know is would the mass...
Homework Statement
Two packages at UPS start sliding down the 20 degree ramp shown in the figure. Package A has a mass of 7.00 kg and a coefficient of kinetic friction of 0.180. Package B has a mass of 12.0 kg and a coefficient of kinetic friction of 0.150.
How long does it take package A...
Please!1
small elastic ball is dropped from the height h = 1.1 m onto an incline. After hitting the incline the ball bounces and hits the incline the second time. The ball bounces at same speed with which it hits the incline. The angle of the incline is 32 degrees. The angle between the normal...
Homework Statement
FATHER PUSHs IS DAUGHTER ON A SLED UP A SNOWY INCLINE. IF THE SLED MOVES UP THE HILL WITH A CONSTANT VELOCITY how MUCH WORK IS DONE?
CHILD & SLED= 35KG FRICTION OF SNOW & SKIDS= .2 INCLINE= 15 DEGREES, d=10 m
Do i need to find the force? (N=mg)
and then...
Hello, all. How do I find the speed of something going down a ramp if I know the total weight of the object (214 pounds) the angle of the ramp (15 degrees) the frictional coefficient (.0236) the ramp is 11 feet long.
Homework Statement
I've got this lab I'm working on and I'm somewhat confused. We pushed a roller cart up an incline plane to determine acceleration and the such. Here is the graph.
http://img231.imageshack.us/img231/7950/physicslabpicsh5.png
Homework Equations
The questions I have...
A 3.0 kg block starts at rest and slides a distance d down a frictionless 32.0° incline, where it runs into a spring. The block slides an additional 24.0 cm before it is brought to rest momentarily by compressing the spring, whose spring constant is 439 N/m. What is the value of d...
Homework Statement
A 684 kg automobile is moving at 13.2 m/s at a height of 5.0 m above the bottom of a hill when it runs out of gasoline. The car coasts down the hill and then continues coasting up the other side until it comes to rest. Ignoring frictional forces and air resistance, what is...
A wedge with an inclination of angle theta rests next to a wall. A block of mass m is sliding down the plane, as shown. There is no friction between the wedge and the block or between the wedge and the horizontal surface.
http://session.masteringphysics.com/problemAsset/1010942/31/MFS_cf_11.jpg...
Okay here is the problem:
A dart gun is fired while being held horizontally at a height of 1.55 m above ground level, and at rest relative to the ground. The dart from the gun travels a horizontal distance of 7.77 m. A child holds the same gun in a horizontal position while sliding down a 39.7...
1. Homework Statement
Two boxes with different masses M1 = 1.3 kg and M2 = 2.2 kg are tied together on a frictionless ramp surface which makes an angle = 29° with the horizontal (see the figure below). (the figure is essentially two boxes tied together by a rope and then another rope tying...
A block slides down an inclined plane of slope angle A with constant velocity. It is then projected up the same plane with an initial speed Vo.
a) How far up the incline will it move before coming to rest?
b) Will it slide down again?
So when it comes at rest, Vy = 0, Vx = 0
Since it...
Homework Statement
The 3.91 kg physics book shown is connected by a string to a 519.0 g coffee cup. The book is given a push up the slope and released with a speed of 3.99 m/s. The coefficients of friction are μs = 0.457 and μk = 0.330. What is the acceleration of the book if the slope is...
Magnitude of Force within incline?
A block with mass of 5.5kg is held in equilibrium on a frcitionless incline of 34 degrees by the horizontal force F. The acceleration of gravity is 9.81m/s^2
What is the magnitude of F? answer in units of N
What is the magnitude of the normal force...
Two blocks with mass m1 = 4.6 kg and m2 = 5.6 kg are connected by a massless string over a frictionless and massless pulley. The angle of the incline is equal to 55.0°. The kinetic coefficient of friction between m1 and the incline is 0.17. What is the minimum value of the static friction...
What is the total work W done on the block by the applied force F as the block moves a distance L up the incline?
http://session.masteringphysics.com/problemAsset/1006802/15/2550_a.jpg
isn't it just FLcos(theta) minus the work of friction which is mew(mg)Lcos(theta)??
what am i missing...
There is not really a homework problem. I just want to understand the concept here.
See the image attached. How is it that in the free body diagram of the image shown the angle theta is from FN to the perpendicular Force applied by box to the horizontal? It is hard to describe in words. I...
Two blocks are connected by a massless string and are held in position by another massless string along a frictionless incline (as shown in the figure). Let M1 = 39.0 kg, M2 = 37.0 kg, and θ = 36°. Calculate the tension in the string connecting the two blocks.
Calculate the tension between...
Homework Statement
A ball is kicked with initial speed 20 m/s and initial angle 40 degrees up an incline of angle 15 degrees. Assume that the ball leaves the ground a the base of the incline at x_{0}=0 and y_{0}=0. How far up the incline does the ball initially land (not how far horizontally...
Homework Statement
The pulley is light and frictionless. Find the mass M1, given that M2 (6.00 kg) is moving downwards and accelerates downwards at 3.61 m/s2, that θ is 30.0°, and that μk is 0.490.
Homework Equations
F=ma
F||=mg*cos(theta)
Fper=mg*sin(theta)
The Attempt at a...
Homework Statement
A projectile is fired up an incline (incline angle φ) with an initial speed vi at an angle θi with respect to the horizontal (θi > φ). (a.) Show that the projectile travels a distance d up the incline, where
d = 2*vi^2*cosθi*sin(θi-φ) / g*cos(φ)^2
Homework...
Homework Statement
Find the acceleration reached by each of the two objects shown in Figure P4.49 if the coefficient of kinetic friction between the 7.00kg object and the plane is 0.250
Here is a picture of the problem...
Homework Statement
A 2.00 kg block is held in equilibrium on an incline of angle = 75° by a horizontal force applied in the direction shown in Figure P4.50. If the coefficient of static friction between block and incline is µs = 0.300, determine the following.
(a) the minimum value of F
(b)...
1. Q: With what amount of force must a person pull on the vertical portion of the rope to make the 1000 kg box travel up the 45 degree rough (u_{k} = 0.10) plane at constant speed?
Umm, here is a really awful diagram to help you get the picture. Mac doesn't come with a Paint program, so I...
The first part to an exam question I had to sit at the end of last year. It defeated me then, and I still can't do it now, which worries me more than a little!
Homework Statement
A solid cylinder of radius 10 cm and mass 12 kg starts from rest and rolls
without slipping a distance L = 6:0 m...
Homework Statement
A solid sphere of radius 20cm is positioned at the top of an incline that makes 22 degrees angle with the horizontal. This initial position of the sphere is a vertical distance 1.8m above its position when at the bottom of the incline. Moment of inertia of a sphere with...
Homework Statement
2 identical blocks tied together with a string that passes over a pulley at creast of inclined planes
One makes an angle of (theta1) 28deg to horizontal
other makes angle of (theta2) 62deg to horizontal
Homework Equations
if no friction, then with what...
Homework Statement
An object of mass 10kg is at rest at the top of a frictionless incline. The mass is 2m higher than the elastic spring (k=10 N/cm). What is the objects maximum speed? What is the maximum spring compression?
I think I may have got the answers but I'm not sure. Can someone...
Homework Statement
A 2.6kg block slides along a frictionless horizontal with a speed of 2.9m/s. After sliding a distance of 6m, the block makes a smooth transition to a frictionless ramp inclined at an angle of 12 degrees to the horizontal. How far up the ramp does the block slide before...
A block starts from rest at a height of 4.7m on a fixed inclined plane tilted at 30 degrees. The coefficient of friction is 0.28. If the block continues to slide on the ground with the same coefficient of friction, how far will the block slide on the ground until coming to rest?
[b]2. V =...
Hi, can someone please give me hints as to how to do this problem?
A 12 kg block is released from rest on an 36 degrees inclined plane and moves 2.4m during the next 4.2s. What is the coefficient of kinetic friction for the incline?
I know that the normal force = mgcos(delta), and...
angle of incline is 45 degree, length of the incline is 30m, and the the time of drop is 2.14
1- what should your velocity be at the base of the drop (frictionless)?
my answer: average v=d/t
v=30/2.14=14.0*2=28m/s
2- what is you velocity at the base of the drop...
Homework Statement
What is the minimum work needed to push a 1200Kg car, 118m up 18 degree incline with no friction?
Homework Equations
I used mgsin18 - mgcos18 (don't think this is right)
I know with friction, you do mgsin18 - (coef. friction)(mg)(cos18), and then to get work you...
Homework Statement
A block of mass = 4kg is pushed down an incline with a force of 4 N. The coefficient of kinetic friction of the incline = 0.11 . How far will the block move on the incline in the first 2 seconds after starting from rest ?
Given that angle of incline = 30 degrees...
This really isn't a homework question -- but it does involve my homework. Say you've got a box sliding down an incline of x degrees at a constant speed, I somehow got that that coefficient of kinetic friction is equal to tan(x). Will this always hold true for objects moving at a constant speed...
Homework Statement
A tall uniform rectangular block sits on an inclined plane. If Us = .4, does the block slide or fall over as the angle is slowly increased? Also, the block is 3a units tall and "a" units wide.
The Attempt at a Solution
Just by intuition, I figured that it would tip...
A block of mass m is placed in a smooth-bored spring gun at the bottom of the incline so that it compresses the spring by an amount x_c. The spring has spring constant k. The incline makes an angle theta with the horizontal and the coefficient of kinetic friction between the block and the...
Homework Statement
The five masses below all have the same radius and a cylindrically symmetric mass distribution. They start to roll down an inclined plane, starting from rest, at the same time and from the same height. Give theri order of arrival at the bottom (i.e., ABCDE, DCBAE)
A...
Hello - My geometry is rusty and I'm having some difficulty visualizing a question. Picture a box sitting on an inclined plane with an incline angle of 30 degrees from the horizontal (floor). The box is at rest. There is a 10N normal force (perpendicular to horizontal) and a force, F...
a block slides along a horizontal plane at an initial velocity of 10m/sec. After sliding 4 meters it reaches a 35 degree incline and slides up the hill. the coefficient of kinetic friction is 0.4 for all surfaces.
a) how fast is it going when it reaches the incline?
b) how far up th incline...
URGENT--Weight on an Incline--please help
A 51.5 lb object is sitting on an inclined plane that makes a 33 degree angle with the horizontal. What is the component of weight that tends to make the object slide down the incline?
And, what is the component of weight that presses against the...
So here is the problem with the two parts and then the teacher's clue... I would be majorly appreciative if you could help me out.
Two packing crates of masses m1 = 10.0 kg and m2 = 4.00 kg are connected by a light string that passes over a frictionless pulley as in Figure P4.26. The 4.00 kg...
A wooden block with mass 1.50 kg is placed against a compressed spring at the bottom of an incline of slope 30.0 degrees (point A). When the spring is realeased, it projects the block up the inline. At point B, a distance of 6.00 m up the incline from A, the block is moving up the incline at...