Physics Lab 9

Looking for guidance to question based on characteristics/assumptions of experiment: Experiment background: For our dynamic measurement of the moment of inertia, we will use a vertically-mounted turntable that has a hub attached at its center, which has three grooves of different radius, around which one can wind a string. A mass hanging from the free end of the string provides tension, which exerts a torque on the turntable, thus causing it to rotate. By measuring the time it takes the mass to fall from its initial height to the table top (or some reference line just above it), we can find aa, its (linear) acceleration. From this we can calculate αα, the angular acceleration of the turntable. From the weight of the mass, and its linear acceleration, we can find T, the tension in the string. Once we know all these things, we can calculate the torque, ττ, and from τ=Iατ=Iα find I, the moment of inertia of our turntable platter. Assumptions made in this experiment:  - Turntable disk…

Q2: For the block shown in the figure below, the 40 lb. 20 force is passing through points EF, the 50 Ib. force is passing through points JB, and the force 20 lb. is passing through point C. 1. Find the resultant force and its directions. 2. Determine the resultant moment of three forces in Figure about the x-axis, the y-axis, and the z-axis. dimensions in inch

33.6% Resources Lx Give Up? O Hint Consider the objects labeled A, B, C, and D shown in the figure. 米上 C D Each object is composed of identical thin sticks of uniformly distributed mass 9.15 kg and length 0.489 m. What are the moments of inertia IA, IB, Ic, and Ip of the objects about a rotation axis perpendicular to the screen and passing through the black dot displayed on each object? IA = kg-m² IB = kg-m2 Ic = kg-m? Ip = kg-m? about us privacy policy terms of use careers contact us help

Suppose you start an antique car by exerting a force of 350 N on its crank for 0.16 s.Randomized Variablesf = 350 Nt = 0.16 sd = 0.22 m What angular momentum is given to the engine if the handle of the crank is 0.22 m from the pivot and the force is exerted to create maximum torque the entire time?

1. Perform analysis steps B.1. Derive an algebraic equation for the moment of inertia of the disk/plate by using the conservation of energy method. The variables in your equations should be the values you can measure (e.g., mass of hanger, angular velocities, angular acceleration, positions and/or velocities of the falling mass, etc.) and physical constants (i.e., the acceleration due to gravity). You should do this on a separate sheet and keep a copy as you will need it during the lab.

I would like some guidance on how to approach this answer.   What effect does the diameter of the string have on the lever arm? Explain why we can ignore this effect. Experiment background: xperiment background: For our dynamic measurement of the moment of inertia, we will use a vertically-mounted turntable that has a hub attached at its center, which has three grooves of different radius, around which one can wind a string. A mass hanging from the free end of the string provides tension, which exerts a torque on the turntable, thus causing it to rotate. By measuring the time it takes the mass to fall from its initial height to the table top (or some reference line just above it), we can find aa, its (linear) acceleration. From this we can calculate αα, the angular acceleration of the turntable. From the weight of the mass, and its linear acceleration, we can find T, the tension in the string. Once we know all these things, we can calculate the torque, ττ, and from τ=Iατ=Iα find I, the…

In the figure shown assuming clockwise moments are positive, compute the moment of force F= 243 kN and of force P= 109 kN combined about point A. Write numerical value only and 2 decimal places. A 1m D 1m F P B

Simulation #2: Questions 1. Describe the effect of increasing the mass m of the falling mass. How does the acceleration a change? Increase, decrease, or remains constant? How does the moment of inertial I of the pulley change? Increase, decrease, or remains constant? Explain. 2. Describe the effect of increasing the pulley mass M. How does the acceleration a change? Increase, decrease, or remains constant? How does the moment of inertial I of the pulley change? Explain. 3. Reset the system to the initial conditions. The pulley’s shape is initially similar to a thin hollow cylinder with outer radius Ro and inner radius Ri. Increase only the outer radius Ro. How does the acceleration a change? Increase, decrease, or remains constant? How does the moment of inertial I of the pulley change? How does the torque t on the pulley change? Explain. 4. Reset the system to the initial conditions. Keep the outer radius at Ro=100mm and decrease the inner radius to zero (Ri =0) to make the pulley a…

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A circular disk is free to rotate in a vertical plane about the pin at A. The disk has a mass of 13 kg and a radius of 1 meter. It is released from rest in the position shown. a. Plot the free body diagram and the kinetic diagram b. Determine the mass moment of inertia about point A c. Determine the angular acceleration of the disk d. Determine the total supporting force at A

Determine the angular momentum of a 78-g particle about the origin of coordinates when the particle is at x = 4.9 m, y = -6.3 m, and it has velocity v = (3.51-80k) m/s. Find the x-component. Express your answer using two significant figures. Lx = ΜΕ ΑΣΦ Submit Request Answer ▼ Part B Find the y-component. Express your answer using two significant figures. Ly= ΜΕ ΑΣΦ Submit Request Answer Part C Find the z-component. Express your answer using two significant figures. ? kg-m²/s ? kg-m²/s

Shown in the figure is a 258-kg homogeneous cylinder that rolls without slipping on the horizontal surface. Given P1= 980 N, P2= 1108 N, r= 0.9m, determine a. the acceleration of the mass center, b. angular acceleration, and c. the plane reaction on the cylinder. Note: Draw the diagram/s before formulating any equation. PL P2

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Ball, mass m, radius r, moment of inertia I. H path of center of ball h A ball, of mass m, radius r, and moment of inertia I, starts from rest, then rolls without slipping, descending a distance H before the ground levels off and becomes perfectly flat. It then freefalls off a sharp cliff, traveling a horizontal distance D while descending an extra vertical distance h, as sketched in the diagram. Calculate the distance D in terms of the other relevant quantities. Your derivation may involve multiple steps, so please try to give me a clear chain of thought. I recommend you start by finding the amount of time for the ball to freefall the distance h.

I NEED HELP WITH BOTH QUESTION

General Physics 1: Moment of Inertia Learning Task: Solve the following problems. Follow the GUFSA method for your answers. (Given, Unknown, Formula, Solution, Answer). Include the graphical representation. See examples below. Sample Problem: 1. A 100-gram ball connected to one end of a cord with a length of 30 cm. What is the moment of inertia of ball about the axis of rotation AB? Ignore cord's mass. A Known: The axis of rotation at AB Mass ball (m) = 100 gram = 100/1000 = 0.1 kg m The distance between ball and the axis rotation (1) = 30 cm = 0.3 m gahical represeritalion B Wanted: Moment of inertia of ball (1) Solution: I=mr? = (0.1 kg)(0.3 m)2 1= (0.1 kg)(0.09 m²) I= 0.009 kg m² 1. The axis of rotation of a rod is located at the end. Find the moment of inertia of a long uniform rod with a length of 3.5 m and a mass of 4 kg. 2. The axis of rotation is located at the center of the solid cylinder. What is the moment of inertia of a 11.6-kg solid cylinder with a radius of 4 cm.? 3. A…

You are collecting data to study changes in the angular momentum of a bicycle wheel when a force is applied to it. Which of the following measurements would be least helpful to you?  a. the time for which the force is applied b. the radius at which the force is applied c. the angular velocity of the wheel when the force is applied  d. the direction of the force

The spool has a mass of 70 kg and a radius of gyration of KG 0.3 m. (Figure 1) Show Transcribed Text α = = 250 mm Show Transcribed Text HA Templates Value If the coefficients of static and kinetic friction at A are μs = 0.2 and μ = 0.15, respectively, determine the angular acceleration of the spool if P = 60 N. Express your answer to three significant figures and include the appropriate units. A Units 400 mm ? P

The force F in the figure a) Calculate the moment with respect to point A. b) Calculate the moment about the z-axis. c) Calculate the moment with respect to the line AB.

A part of a 4 cm long nail protrudes from the wall as shown in the figure. If a a force F is applied. Select all the correct answers from what can be determine with this information. a) The angle between the applied force and the nail.b) The deflection (deformation, bending) of the nail.c) The magnitude of the force that holds the nail in the wall.d) The resulting moment at point A.e) The distance of the nail penetration into the wall.f) If the nail is deformed (bent) or if it fractures.g) The weight of the nail.h) The component of force F in direction j.i) The resulting moment component at A in the –k direction.

Modified True or False I. The moment of a force about an axis or line is the measure of its ability to produce turning or twisting about the axis. II. The magnitude of the moment of a force about an axis which is perpendicular to a plane containing the line of action of the force is defined as the product of the force and its perpendicular distance from the axis to the line of action of the force.  Choose the answer from the choices below. a. Only I is correct b. I and II are correct c. I and II are false d. Only II is correct

I Review I Constants You are a project manager for a manufacturing company. One of the machine parts on the assembly line is a thin, uniform rod that is 60.0 cm long and has mass 0.700 kg. Part A What is the moment of inertia of this rod for an axis at its center, perpendicular to the rod? Express your answer with the appropriate units. ? I = Value Units Submit Request Answer Part B One of your engineers has proposed to reduce the moment of inertia by bending the rod at its center into a V-shape, with a 60.0° angle at its vertex. What would be the moment of inertia of this bent rod about an axis perpendicular to the plane of the V at its vertex? Express your answer with the appropriate units. ? I = Value Units Submit Request Answer

2 * Incorrect An experimental device imparts a force of magnitude F = 55 lb to the front edge of the rim at A to simulate the effect of a slam dunk. Compute the moment of the force F about point O and about point B. The moments are positive if counterclockwise, negative if clockwise. Finally, locate a point C from the base at O to the location on the ground where the force imparts zero moment. The distance d from point O to point C is positive if C is to the right of O, and negative if to the left. Assume a = 36 in., b = 28 in., h = 12 in., H = 10 ft, c = 3, and d = 6. a Answers: Mo= MB = b d = H i 16.6 i -103 i 3.83 lb-ft lb-ft ft

Quiz 1: Locate the centroid of the shaded area below and calculate the moment of inertia with respect to the axis a-a. a -x² = 9y 3 m to 6 m 6 m 3 m,

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Point masses: The moment of inertia (also known as rotational inertia) of a point mass a distance r from the axis of rotation is I = mr2. For a set of point masses m, at a distance rị from the axis we just sum / = Em,r?. 1. A baby's toy is made up of six beads, each of mass M on a ring of radius R. Assume the ring has negligible mass. Determine the total moment of inertia about the axis going through the center, perpendicular to the page. Treat the beads as point masses. Repeat for the ring of radius R/2. Simplify your answers. axis axis radius R/2 radius R Which ring is easier to start (or stop) rotating? Explain.

A wheel of radius a, mass m, and moment of inertia I is pulled along a horizontal surface by application of a horizontal force F to a rope unwinding from an axle of radius b as shown in the figure. There is a friction force between the wheel and the surface such that the wheel rolls without slipping. a. What is the linear acceleration of the wheel? b. Calculate the frictional force that acts on the wheel (Use Newtonian formalism). b a