Vertical Definition and 1000 Threads

A particle moves in a vertical plane from rest under the influence of gravity and a force perpendicular to and proportional to its velocity. Obtain the equation of the trajectory, and identify the curve.

If an object is thrown vertically upward from a height of h_0 feet with an initial speed of v_0 feet per second, then its height H (in feet) after t seconds is given by h = -16t^2 + vt + h One ball is thrown vertically upward from a height of 50 feet with an initial speed of 40 ft/sec. At the...

Homework Statement Homework EquationsThe Attempt at a Solution I have solved the first part already. For the 2nd part, I am writing the relevant eqns. Can I take motion of the plank as a pure rotation about the pivot ? Quantities corresponding to pivot is subscripted by p. Conservation of...

Homework Statement A jet fighter flies in a vertical circle of diameter 1000 m. The speed of the aeroplane at the bottom of this circle is 185 m s-1. For the aeroplane at this point, calculate: Apparent weight Homework Equations Fc = mv^2/r Ac = v^2/r Fn = Fg + Fc The Attempt at a Solution...

HI, Can the normal force be in vertical direction ?

Homework Statement A block of mass 7 kg is pushed against a wall by force P. The coefficient of static friction between the block and the wall is 0.42. Determine an expression for the force P as a function of θ such that the block will not slide up the wall or fall down the wall. a.) Draw a...

Hi , just curious about the F.B.D of a pebble moving in a vertical circle, which component that balances the weight of the pebble at the horizontal position , as tension is providing the required centripetal force , weight is acting downwards , which component balances it ?

Homework Statement This is paper from june 2016 , the link below; http://qualifications.pearson.com/content/dam/pdf/International%20Advanced%20Level/Physics/2013/Exam%20materials/WPH01_01_que_20160524.pdf Can someone pleeeeeze explain how to solve question 15 part B AND queation 16 part B . I...

1. The problem statement, all variables, and given/known data Two vertical cylinders rest on a flat surface, next to each other. Both have a hole on the side at the bottom so that the water can flow from one cylinder to the other without leakage. The diameter of the first cylinder is D1=3 m, the...

Homework Statement Find the minimum height of a vertical flat reflector, in which a 1,78 m person can see its full reflection. Homework Equations M = h'/h The Attempt at a Solution I really don't know what to do here, and I feel as if I'm missing some crucial element. The chapter about...

Homework Statement Homework Equations ##E_{\operatorname{total}}=E_{kin}+E_g## ##F_{net}=F_N+F_g## ##a=\frac{v^2}{r}## The Attempt at a Solution I've already technically completed question 4 part c, getting an answer of 8168 N downwards (which is what the answers say). However, this is...

When looking at a night light with almost closed eyes, I notice that the light becomes a vertical line. When tilting my head 90 degrees, the line becomes horizontal. Can this be explained by Heisenberg's Uncertainty principle? This question has been asked in another thread : "Squinting at...

Hello, I am curious to see how the mathematical analysis of a vertical circular motion with a sensible rope, that is to say, a rope that streches easily, looks like. k- constant of the rope. thanks,

Homework Statement A hemispherical shell has radius ##R## and uniform charge density ##\sigma##. FInd the electric field at a point on the symmetry axis, at position ##z## relative to the center, for any ##z## value from ##-\infty## to ##\infty##. The Attempt at a Solution Let ##\theta## be...

Homework Statement A water jet hits a wall and splits into two streams (see attachment). The jet carries 3kg of water per second. The cross-sectional area of the flow at (2) is A = 2*10^-3 m^2. The average velocities at the outlets are V2 = V3 = 1m/s What is the net vertical force exerted by...

Homework Statement A block is hung from a vertical spring. The spring stretches (h = .0650 m ) for a particular instant in time. Consider the earth, spring, and block to be in the system. If m = .865 kg and k = 125 N/m, find the change in the systems potential energy between the two times...

Homework Statement A heavy mass m is attached to thin wire and whirled in a vertical circle. Then the wire is most likely to break A only when mass is at the lowest B somewhere between lowest point and horizontal point C only when mass is horizontal D only when mass is at highest point...

Homework Statement (please ignore something that is not english) Homework Equations ac=v^2/r Fc is about 6.0E3 N and ac is about 5.0 m/s^2 (b) is the problem... The Attempt at a Solution what is 'with the vertical' here? the direction/opposite of ac or the direction of v?

Homework Statement A hunter is aiming a blowgun directly at a bird on a tree branch 4.0 m above the blowgun and 10 m away. If the speed of the dart is 25.0 m/s and the bird stays in place, by what vertical distance will the dart miss the bird? Homework Equations s= ut + 0.5at2 The Attempt at...

Homework Statement A small car with mass .800 kg travels at a constant speed of 12m/s on the inside of a track that is a vertical circle with radius 5.0m. If the normal force exerted by the track on the car when it is at the top of the track is 6.00N, what is the normal force at the bottom of...

Homework Statement A block of mass 200g is suspended through a vertical spring. The spring is stretched by 1.0 cm when the block is in equilibrium. A particle of mass 120g is dropped on the block from a height of 45 cm. The particle sticks to the block after the impact. Find the maximum...

Hi I am trying to make a CAD model of something like the scoop sampler shown below. http://www.rolls-royce.com/~/media/Files/R/Rolls-Royce/documents/customers/nuclear/scoop-sampling-tcm92-50918.pdf This is for a university coursework that requires design of bespoke machines. I am trying to...

Dear all, I am stuck on this question: "If f(x)=(2^x)+1, give in simplest terms the formula for h(x), which is obtained from transforming f(x) by a vertical stretch, scale factor 8 relative to y=0 a translation by vector (1,4) a horizontal stretch, scale factor 1/2 relative to x=0" This is...

Homework Statement A small toy car slides down an elaborate track. At one point during this trip, the car will go around a vertical loop with radius 15cm as shown. What is the minimum speed the car must have at the bottom of the loop in order to make it all the way around the loop without...

Anyone know how to get a vertical line between two columns ? Like here in AMSTeX

https://www.dropbox.com/s/be52pax3jezv3cb/IMG_20170128_170143.jpg?dl=0 https://www.dropbox.com/s/be52pax3jezv3cb/IMG_20170128_170143.jpg?dl=0 I have question what causes vertical lines on the photo of the screen of my laptop? But I would like to find out it alone. Could someone lead me? I know...

Homework Statement In each of the diagrams (please see attached file (I am sorry for the rotated, the original was in normal form but when uploading it, it was somehow rotated)) and the description of each case below, a particle is moving on a smooth surface, so that the reaction force R acting...

Homework Statement State an expression for the vertical force at the elbow joint FE in terms of the other forces acting when the arm is held horizontal with the dumbbell in the hand. Homework Equations No equations needed. The Attempt at a Solution Since muscles can not expand beyond...

Hi everyone, I have to calculate the critical speed of a vertical shaft. I have been looking on internet how to calculate, and I have found that this critical speed is based on the type of the supports of the shaft. The type of supports determine the deflection of the shaft (δ) and for this...

I'm doing a program for the simulation of some experimental data. The data is recorded by a device and that the register are the: - acceleration components along the (x, y, z), - time (starting from 0, and change of each recording Delta t), - orientation (azimuth, roll, pitch). My goal is to be...

Homework Statement A vertical rod is rotating about its longitudinal axis at a constant angular velocity Ω. It is allowed to swing freely from the endpoint A. The angle between the rod and the longitudinal axis of the system is denoted by θ. Point A is located on the highest endpoint of the...

Homework Statement A yo-yo consists of two cylinders with radius ##R##, mass ##M## and height ##H## connected by a smaller cylinder of radius ##r##, mass ##m## and height ##h##. Determine the yo-yo's acceleration in ##z##-direction, using its moment of inertia. Homework Equations Moment of...

Homework Statement I need to find the period of small vertical oscillations about equilibrium position of a string whose motion can be described by the following equation: d2x/dt2 = (-g/h)*x Answer: 2π√(h/g) Homework Equations I know that the time period is given by the formula T = 2πω where...

Homework Statement A kicker wishes to kick a field goal, so he sets the ball on the ground 30 yards (27m) from the goal. Assuming he kicks the ball at an angle of 45 degrees and a speed of 27m/s, what is the height of the ball above the ground when it goes over the crossbar. Known: R = 27m Vo...

I just wanted to confirm whether the idea I have about vertical springs is correct or not. Suppose you have an ideal (massless) spring oriented vertically, and suspended from a block in the air, which in turn is mounted on a stand and placed on a desk. The distance from the desk (or the base of...

Homework Statement Height - 15m Time when ball hits the ground after upward throw 3 s. I have been trying to find intitial speed with these formulas : d=v_initial*t-0.5*g*t^2 and v=v_initial+g*t Please help to understand how to find initial speed and after what time the ball is at 15m height...

im stuck on identifying vertical asymptotes because of this nasty denominator. My professor telling me to factor it out but, is there different way to solve for the vertical asymptotes.

Homework Statement Can someone please help me with this A level physics question on Mechanics. Help will be appreciated. The picture of question is attached. :D Thank you Homework EquationsThe Attempt at a Solution [/B]sin20x590=201.79N or cos70x590=201.79N

Homework Statement the main question asks: "If the book is initially at rest, what is its speed after it has traveled 0.400 m up the wall?" Homework Equations ∑F = m*a vf2 = vi2 + 2 * a * d , when initial velocity is 0. The Attempt at a Solution So here's my free body diagram: and out of...

With part (c) - initially I thought the upward acceleration would decrease as the tangerine goes past the windows because it is being acted upon by the force of gravity, but then I felt that the upward acceleration is not changing - it is fixed - and so is the downward acceleration due to...

I am having trouble understanding the concepts of vertical circular motion , though I solve all the numericals , but I think I am lacking the basic concepts of VCM. Explain how I can master this topic?

Homework Statement http://holland.pk/uptow/i4/4af070d190cc175e6ca5d326cd60cda2.png The attempt at a solution the question have a possible solution? that equation is based on stress is constant, so how to use this equation to proof? i m a year 2 student. i can only solve part i...

I have trouble understanding how a connection one-form can separate and tangent space##{T_u}P## of a principal bundle uniquely into horizontal and vertical spaces ##{H_u}P \oplus {V_u}P## since from the literature I am learning (mainly Nakahara' book), the connection one-form is a...

Homework Statement One Second after vertical projection. a body is at the height of 10m and still moving upward. find it's initial speed and the height it will reach 1 second later. Compute the Maximum Height Homework Equations vf^2=vi^2+2ad The Attempt at a Solution Vf = 0 m/s Vi = ? Height =...

Hello guys, first I am sorry I didn't use the template. I deleted it by mistake and I didn't know how to create a new thread from scratch. so I have two cases of the same problem, on with initial conditions of pulling down and the other pushing up, I tried different signs but It didn't work...

Motion in a vertical circle* 1. Homework Statement Case 1: When a particle P of mass m moves in a vertical circle centered on O, its motion is governed by two forces, its weight mg and a force R directed radially inwards constraining it to move in a circle radius r. Resolving parallel to an...

Homework Statement The water stays in the bucket, even at the top of the circular path, as long as the speed exceeds a certain value. Explain why. I think i have a good answer, but not 100% sure. My answer: There is a centripetal force acting on the bucket and the water since they are...

Hello I am in my final year of schooling in South Africa. For Physics, we do a module called Vertical Projectile Motion & Graphs. This section uses equations of motion etc. I cannot seem to find the online resources for me to truly master this section. The sites I have are of projectile motion...

For the case of a particle attached to an inextensible string which is hanging at rest and then provided an impulse horizontally, what conditions must the system meet in order to allow for COMPLETE circular motion. I am well aware the tension at the apex of the motion must be satisfy one of the...

Homework Statement Homework Equations T= 2pi*sqrt(L/g) The Attempt at a Solution T= 2pi*sqrt(0.325/9.8)=1.14 s That seems like a reasonable answer. [/B]