Vertical Definition and 997 Threads

A stone weight 32 N is attached to a wire and hung from a rigid support. A string is then attached to the bob and is pulled sideways with a horizontal force P until the tension in the wire is 44N a) What is the angle between the wire and the vertical? b) Calculate the size of the force P c)...

1. A string 1.5 m long is used to whirl a 1.5 kg stone in a vertical circle to that its velocity at the top is 6 m/s. What if tension in the string when it is horizontal? (g = 9.8 m/s2) 2. Centripetal acceleration = mv^2/r 3. i don't get what they mean by vertical circle...

i am working on design of a machine which requires use of gear. I need to transmit horizontal rotational motion to vertical rotary motion. my question is their a means of getting the specific type and specification of gear am to use without calculating? if am to calculate how do i start and what...

I am having trouble solving these vertical motion problems, please attempt to solve these and explain/show solution so that I can follow 1.A helicopter, which is rising vertically at 20 m/s is 25 m from the ground when an object is dropped from it. How high will the object rise after it is...

I have been thinking about this for some time and I came up with this.Very very strong industrial magnets will be used for lift and thrust.Every part of the craft will be attached together. No. 1 and 2 magnets will be used for vertical lift.No. 1 magnet is set at its position and can't...

How do you calculate the stress in a cantilevered beam with a point load at the free end where the load has a large horizontal component loading the beam in tension as well as bending from the vertical component? And the beam bends far enough so it's slope will match the slope of the load at...

Hi I have a thin box (e.g. like an A4 book) I would like to shake up and down sinusoidally. At the moment I have a flywheel connected to a beefy motor. I have tried using a cam to do it but it has proven not so ideal. What other methods can I use? Thanks

Homework Statement anyone have any suggestions for devices which generate vertical vibrations, preferably of variable amplitude (say, up to a cm or so) and of variable frequency (around 10hz) which can be used to vibrate a container full of, say, sand? Homework Equations umm... The...

Homework Statement A 1.25-kg mass stretches a vertical spring 0.215 m. If the spring is stretched an additional 0.130 m and released, how long does it take to reach the (new) equilibrium position again? m_object = 1.25 kg A (amplitude) = 0.130 m (since the spring has a new equilibrium at...

Homework Statement A chilld rolls a .6kg bball up a long ramp. The bball can be considered a hollow sphere. When the child releases the bball at the bottom of the ramp, it has a speed of 8m/s. Assume the work done by friction on the bball is the same when the ball moves up or down the ramp and...

Homework Statement I have this exercise in physics, that i just don't know how to do. "A child is spinning a 100g toy, which is attached to a 30cm long rope on a vertical level. How much force does the rope have to handle?" Well, the problem for me is, that there's no time given, how...

Does the magnitude of centripetal force as well as the tension change in a vertical circle?

At the top of a circle, does the direction of the contact force depend on whether or not mg is > than or < than the resultant force? So when mg is < than the resultant force, mg is acting downward but there is a greater force than this toward the centre, so to compensate for this the contact...

Homework Statement For an experiment, we used a vertical mass-spring system and we are trying to find k, the spring constant. The only values we know are the mass and the displacement. If we were to use F = -kx, what would F be? A website said it would be 9.8, but I'm not sure about...

Hi, I need to estimate the sloshing natural frequency, in the three axis of a rectuangular tank, not fully filled of liquid. I need this for understading how changes the vehicle dynamics in some trucks. I have found a linear formula for the horizontal direction, but I have found nothing...

Homework Statement A ball is thrown upward with an initial speed of 80 ft/sec. Find the following: a. how high does it go? b. after 3 seconds, what is the speed of the ball? c. how high is it at this time? Homework Equations a. how high does it go? b. after 3 seconds, what is...

Ok I have most of this solved but can't get the third part right. Homework Statement A spring of spring constant 128N/m is compressed a distance of 2.0m from its equilibrium position, and used to project a ball of mass 4.0 kg directly upwards. Neglect air resistance. 1. What is the...

In a lot of physics book there is an example of a problem saying that we tie a bucket of water to a string and move it with vertical circular motion what is the minimum speed ,and the way they told us to solve these problem is to set the normal force to 0 then solve for v ,but I never actually...

Homework Statement A 4.50 kg weight hangs from a vertical massless ideal spring. When set in vertical motion, the weight obeys the equation y(t)=(8.50 cm)sin[(3.85 rad/s)t-1.40]. What is the maximum speed of the weight? What is the spring constant? Homework Equations Hooke's law: F = -kx...

Homework Statement A 5.0kg mass held is between two springs of unstretched length 0.1m such that the springs are horizontal. The mass is then released in such a way that it is supported against gravity by these two springs. What angle do the springs make with the vertical at equilibrium...

Homework Statement Consider the curve x^2+xy+y^2=27 Homework Equations Find all points on the curve where the lines tangent to the curve are vertical The Attempt at a Solution I found dy/dy = (-2x-y)/x+2y) and I think I found the equations of lines visually to be x=6 and x=-6...

Consider the above rotating vertically aligned cylinder in Schwarzschild geometry. Would anyone agree or disagree with the following analysis? If a local observer at the highest end of the cylinder measures that end of the cylinder to be (say) 2 rpm, then another local observer will measure...

Hi I have some conceptual questions about one situation. I have posted the picture. We have a bead on a ring which is rotating about the vertical axis passing through its center. The bead is not tied to the center of the ring , though it appears like that in the figure. Let m be the mass of...

Homework Statement A 0.110 kg dart is fired straight up. Find the vertical distance the dart travels from its position when the spring is compressed to its highest position. This is the second part of a question. The first part was to calculate the maximum compression... I calculated 0.1558...

why doesn't the vertical distance traveled in the given time ,under the action of gravity alone, below the straight line it would follow in the absence of gravity, depend upon the angle of projection of a projectile? With no gravity, the projectile, which is projected at an angle at certain...

1. An Arrow is aimed horizontally at a bulls-eye 15 m away. If the initial veoicity of the arrow is 128 km/hr, how far below the bulls-eye will the arrow strike? A) 2.1 cm B)12 C)42 cm D)87 cm 2. Homework Equations : x=a*t or t=x/a y=1/2g*[t][/2] 3. So first, we convert 15 m...

Homework Statement Let’s assume the MilkyWay disk in the Solar neighborhood has a constant density,P = 0.15 M pc−3. In that case, what is the vertical oscillation frequency in the Solar neighborhood? What is the oscillation period? Homework Equations p=2pie/v from my mechanics class i...

Homework Statement Given z(t) as above, write out the expression for the vertical velocity Homework Equations z(t)=Asin(vt) where z(t) is the vertical position of a test particle, A is the amplitude of its motion, and t = 0 is the time when the particle is at the midplane The...

First of all, the situation is as follows : A girl is swinging a bucket filled with water, and she is whirling it around in a vertical motion. When the bucket is at any other position on the circumference of the circle, everything seems fine and intuitive. But an interesting thing...

Hi, I have a problem (1) where I need to compute the ratio of probabilities of hitting and stopping at a positive vertical barrier x vs hitting and stopping at a negative horizontal barrier y after starting from (0,0). I feel that by symmetry, the answer to this would be the same as...

Homework Statement Weight of sphere = W and a force P is applied on its surface to attain equilibrium (Friction is present). Then 1. Pmin = √3W/2 2. Pmin = (√5-1)W/2 3. When P is minimum, Angle of friction max between sphere and wall is cos-1 (√5-1)/2 4. When P is minimum, Angle of...

Homework Statement [PLAIN]https://wug-s.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?cc/DuPage/phys2111/fall/homework/Ch-08-GPE-ME/mass_vertical_spring/7.gif A spring with spring constant k = 35 N/m and unstretched length of L0 is attached to the ceiling. A block of mass m = 1 kg...

Suppose there is a spring with a mass m attached to it, and it is released from rest. It will oscillate, starting from a certain point y0, going back to equilibrium and then down to let's say y2. Let's say in the first case, I call y1 my x = 0 point for the spring. When it passes equilibrium...

Homework Statement [PLAIN]https://wug-s.physics.uiuc.edu/cgi/courses/shell/common/showme.pl?cc/DuPage/phys2111/fall/homework/Ch-08-GPE-ME/twomasses_vertical_spring/3.gif A block of mass 7 kg hangs on a spring. When a second block with an identical mass of 7 kg is tied to the first, the...

Homework Statement Distance - 5m height 1m Homework Equations vf^2=Vo^2+2ay The Attempt at a Solution I know vf^2 = 0, and I'm trying to find vo^2, and I also know y is the height so that would be 1m, is a 9.8? If It is I would get this 0=vo^2+19.6. and to find vo^2 I would...

Show the pre-image of a vertical line Re(w)=c under f... Homework Statement a) Show that the pre-image of a vertical line Re(w)=c under f is a circle centered on the line Re(z) = -1 and tangent to the real axis Im(z) = 0. b) How does such a circle intersect the circle |z| =1? Here's f by...

Homework Statement For what value(s) of t is <3t2-t3, 2t2> a vertical vector? The Attempt at a Solution I set them equal to each other, and received t=1. Is that what I am supposed to do?

where in the definition of vertical subspace we understand that the notion of canonical vertical vector: a vertical vector is a vector tangent to the fiber. ?

Homework Statement A softball pitcher rotates a 0.236 kg ball around a vertical circular path of radius 0.633 m before releasing it. The pitcher exerts a 30 N force directed parallel to the motion of the ball around the complete circular path. The speed of the ball at the top of the...

Homework Statement A stone is thrown vertically upward with a speed of 13.5 m/s from the edge of a cliff 74.0 m high (a) How much later does it reach the bottom of the cliff? (b) What is its speed just before hitting? (c) What total distance did it travel? Homework Equations i am only...

find all vertical tangent lines of a curve - more than one variable! curve : xy^2 - x^3y = 6 derivative : (3x^2y - y^2) / (2xy - x^3) question : find the x coordinate of each point on the curve where the tangent line is vertical. after some consideration, i decided that when the derivative...

If pump's motor load is around 33 ampere and 48 volts, how do you calculate the maximum flow and the head? Note the it is a vertical centrifugal pump

Homework Statement A Soccer ball is projected at a certain angle (ϴ) above the horizon. It travels a horizontal distance of 1.2x102m in 3.0s. a) Find the horizontal velocity b) Find the initial vertical velocity (VV1). c) Find the magnitude and direction of the initial velocity...

Homework Statement a mountain climber plans to jump from A to B over a crevasse. Determine the smallest value of the climbers initial velocity Vo and the corresponding value of the angle alpha so he lands at B Homework Equations A to B is 1.8m horizontal distance and B is lower than A...

Homework Statement A ball swings in a vertical circle at the end of a rope 1.30 m long. When the ball is 36.1° past the lowest point on its way up, its total acceleration is (-22.5 i + 20.2 j) m/s2. (a) Determine the magnitude of its radial acceleration. (b) Determine the speed and velocity...

Hello, Do you have any idea where I could find my formula for the Grashof N°, Nu and Heat? Thank you very much for your help Steve

Hello, I have an electric cable in a vertical steel Tube. I estimated the temperature that will reach the JTube exposed to sun radiation. I came with these equations QCable+ Qsun - Qradiated = mc( Tfinal - TAmbient) where QRadiated= k.A.(Tfinal^4-TAmbient^4), QSun=234 [W/m^2] * A...

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So I've been stuck on this problem for hours, I just can't seem to put the pieces together... Homework Statement Two basketball players of equal height, (and jumping with same initial velocity, etc.) by jumping they raise their centers of mass the same distance "H". The first player (A)...

suppose we have a principle fiber bundle P at a point p \in P we have the decomposition T_pP=V_pP + H_pP it is said that the vertical subspace V_pP is uniquely defined while H_pP is not i cannot understand this point the complement to a unique subspace is surely unique, i think. it is a...