What is Vertical: Definition and 1000 Discussions

Homework Statement F=Force, v=Velocity, a=acceleration m=mass (0.01kg) R=Normal Reaction to surface Hi, can anyone help, I keep getting the wrong answer on this question and it is really annoying me. Here is a picture of the diagram: "A Marble of mass 0.01kg is on top of a smooth...

Homework Statement A conducting rod slides down between two frictionless vertical copper tracks at a constant speed of 4.5 m/s perpendicular to a 0.56-T magnetic field. The resistance of the rod and tracks is negligible. The rod maintains electrical contact with the tracks at all times and...

Homework Statement An electron with a speed of 1.9 × 107 m/s moves horizontally into a region where a constant vertical force of 4.3 × 10-16 N acts on it. The mass of the electron is 9.11 × 10-31 kg. Determine the vertical distance the electron is deflected during the time it has moved 34 mm...

1. A 2.79 kg block is pushed 1.48 m up a vertical wall with constant speed by a constant force of magnitude F applied at an angle of 60.8 with the horizontal. The acceleration of gravity is 9.8 m/s2 .If the coefficient of kinetic friction between the block and wall is 0.581, find the work...

Homework Statement A uniform beam is suspended horizontally by two identical vertical springs that are attached between the ceiling and each end of the beam. The beam has mass 225 kg, and a 175-kg sack of gravel sits on the middle of it. The beam is oscillating in SHM, with an amplitude of 40.0...

Homework Statement Stuntman's Freefall, a ride at Six Flags Great Adventure in NewJersey, stands 39.6 meters high. Ignoring the force of friction, what is the minimum power rating of the motor that raises the 1.20×105kg ride from the ground to the top in 10.0 seconds at a constant velocity...

A ball is spun in a vertical circle on a string. A light is shining from the side of the circle so that a shadow of the balls motion is shown on a wall behind it. The shadow is simply a circle moving up and down in a straight line (I can't attach the image). The amplitude of the shadow is 0.5m...

Homework Statement A spring is suspended from a ceiling and has a block attached to its lower end. The block is held a distance y1 from the ceiling (at this point the spring is at its rest length) and released. The block oscillates up and down with its lowest point being 0.091 m below y1. Find...

Please refer to the diagram attached. I am trying to work out the peak stress and deflection of a vertical member in a simple steel frame. I know that the vertical member will be subjected to a buckling stress, but I'm unsure as to whether the moment about O caused by the cantilevered...

A rude tourist throws a peach pit horizontally with a 7.0 m/s velocity out of an elevator cage. The ground is 17 m below. How long will it take for the pit to land if the elevator is moving upward at a constant 8.5 m/s velocity? d=Vot + 1/2at2 My attempt that continuously doesn't...

Homework Statement A mass is connected between two identical springs with the same spring constant, k. The equilibrium length of each spring is L, but they are stretched to 2L when the mass is in equilibrium. Ignoring gravity, find the equations of motion and then angular frequency of...

Homework Statement A pilot flies an airplane in a vertical circular loop with a radius of R = 1200 m. The plane is gaining speed as the pilot makes a dive, and its speed is measured to be 150 m/s when the plane reaches the bottom of the circle. If the total acceleration of the plane at the...

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...

Homework Statement Say I have a vertical spring, with a mass attached to the bottom of the spring, and the spring is attached to the ceiling. Say I push up on the mass compressing the spring, and then I release the spring from rest. Do I need to take into account the gravitational...

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 bead rests on smooth vertical ring of radius R. Bead is given a slight push so that it slides down around the ring. At some instance the bead is at angular position θ with vertical then choose correct option from the following A. acceleration of bead is vertical at θ =...

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...

Homework Statement Considering that water flows in the pipe and mercury is used in the manometer, compute the discharge through the pipe. Please see the attached information for the given data. Homework Equations Bernoulli: (P1/rho * g) + (V1^2/2g) + Z1 = (P2/rho * g) + (V2^2/2g) + Z2...

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...

Homework Statement You have been asked to design a roller coaster track with a circular vertical loop in it. The loop is to have a radius of 10.0 m. How fast would the roller coaster have to be traveling so that at the bottom of the loop, the passengers will feel as if the seats are pressing...

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...