Answered: 1. Calculate the moment and direction…

1. Calculate the moment and direction about point A for each of the scenarios below. 100 N A) C) 10 m 10 m 100 N 100 N B) 10 m D) 4 m 6 m 200 N 200 N

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter10: Rotational Motion And Angular Momentum

Section: Chapter Questions

Problem 44PE: Repeat Example 10.15 in which the disk originally spins clockwise at 1000 rpm and has a radius of...

See similar textbooks

Related questions

Q: A 30 kg-m? object and a 70 kgm² object have an angular collision. The graph below is for the 70 kg…

A: I1 = 30 kg.m2I2 = 70 kg.m2

Q: A 30 kg-m? object and a 70 kg-m² object have an angular collision. The graph below is for the 70 kg…

A: The rotational inertia of object A is given as I=30 Kg.m2 The rotational inertia of object B is…

Q: A bowling ball of mass 7.28 kg and radius 11.0 cm rolls without slipping down a lane at 3.00 m/s .…

A: The moment of inertial of the ball about the center is I=25mr2

Q: 71. A pitcher throws a curveball that reaches the catcher in 0.46 s. The ball curves because it is…

Q: A 30 cm ruler rotates in a circle with the axis at one end. The ruler has an angular velocity of 0.1…

A: Using conservation of angular momentum Li=LfIsω1=Is+ml2ω213Ml2ω1=13Ml2+ml2ω2ω2=Ml2ω13l2M+3m3=Mω1M+3m…

Q: 7. Earth has a bad day. It will lead to a brighter future for you though, because it will give us…

A: Hello. Since your question has multiple parts, we will solve the first part for you. If you want the…

Q: Competitive divers pull their limbs in and curl up their bodies when they do flips. Just before…

A: Moment of inertia is given by where

Q: 6. Find the angular momentum of Earth around the Sun. Also find the angular momentum of a rod about…

A: Mass , M = 500 gm = 0.5 kg Length , L = 4 m To find = Moment of inertia

Q: 1. A bowling ball has a mass of 5.5 kg and a radius of 12.0 cm. It is released so that it rolls…

Q: The magnitude of the force P is 626 N. Determine the magnitude of the moment (Nm) of P about the…

Q: Can you describe how moment couple is applied in these following examples? 1. Turning a steering…

Q: 4. Conservation of angular momentum In the Figure below, two skaters, each of mass 50 kg, approach…

A: “Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: 78. I A 3.0-m-diameter merry-go-round with a mass of 250 kg is spinning at 20 rpm. John runs around…

A: The merry-go-round's angular speed after John jumps on is 22.7 rpm.

Q: Lito is spinning a basketball with a radius of 12 cm on the tip of his finger. Determine the mass of…

A: Given that: r=12 cm=0.12 mI=5.568×10-3 kg.m2m=?

Q: Suppose that the four masses below are located at the vertices of a square. Calculate the moment of…

A: Moment of inertia I = mr2

Q: Ian is spinning a basketball with a radius of 12.13cm on the top of his finger. Determine the mass…

Q: Problem 4 A couple of magnitude M and the three forces shown are applied to an angle bracket. Find…

A: Here we have F1=13 lbf=57.72 N, F2=38 lbf=168.72 N and F3=38 lbf=168.72 N. AB=12inch=0.3 m,…

Q: urrent Attempt in Progress The force of magnitude F = 187 lb acts along the edge of the triangular…

Q: _9. When there is no net external torque acting on the system, a) the angular momentum will depend…

Q: 2. A bowling ball of mass 7.25 kg and radius 10.8 cm rolls without slipping down a lane at 3.10 m/s…

A: In the given question, the ball is rolling without slipping, therefore there will be two types of…

Q: Q4. The 3-kg sphere moves in the x-y plane and has the indicated velocity at a particular instant.…

Q: A 2.0 kg , 20-cm-diameter turntable rotates at 130 rpm on frictionless bearings. Two 510 g blocks…

A: Write a given values of thus question. M=2kgω=130rpmm=510g=0.510kg Moment of inertia of 2kg rotating…

Q: The Moon has a mass of 7.35 × 1022 kg and a radius of 1.74 × 106 m. It orbits around the Earth at a…

Q: roblem 4: Modern wind turbines generate electricity from wind power. The large, massive blades have…

A: Moment of inertia of blade = m r2 there are three blade moment of inertia = 3 m r2 m = 5500 kg…

Q: TRUE OR FALSE 1. Angular momentum is always positive. 2. An object that has a large angular…

Q: Determine the magnitude and sense of the moment of the 800-N force about point A. 800 N 38° 0.6 m A…

A: Force is 800 N .

Q: 4. Determine the moment of force F about point O. F = 500i - 400j + 600k. Express the result as a…

Q: Competitive divers pull their limbs in and curl up their bodies when they do flips. Just before…

A: When the competitive diver is considered as a system, there are no external forces acting on the…

Q: Determine the sense of the moment of the 800 N force about point A in Figure 1.

A: Given:- Force= 800 N at point A. Find the sense of the moment Now,…

Q: A Ferris wheel is a vertical, circular amusement ride with radius 8.0 m. Riders sit on seats that…

A: From equation (2) and (3) we can find the rate of change of momentum:…

Q: A man is pushing a loaded rotating tray with radius of 0.5m on top of a table with a force of F =…

Q: Q6: Forces of 4,12,10,8,6 and 18 N act on a 4 m square as shown in Fig (3). Determine the sum of the…

Q: A man is pushing a loaded rotating tray with radius of 0.5m on top of a table with a force of F =…

Q: 6. Three particles are located in the x-y plane as follows: 3 kg at (2 m, 5 m), 4 kg at (-1 m, -1 m)…

Q: 7. Three masses are attached to a uniform meter stick. The mass of the meter stick is 150.0 g and…

A: The given values are: Here, m denotes the stick’s mass.

Q: Problem 4: Modern wind turbines generate electricity from wind power. The large, massive blades have…

A: (a) Write the total moment of inertia about its axis of rotation.

Q: 3. The four particles as shown in the figure below are connected by a light rigid rod whose mass is…

A: Inertia is the inability of an object to change its state of uniform motion or state of rest. In the…

Q: 2) Find the magnitude of the angular momentum of the second hand on a clock about an axis through…

Q: 3. Use the right-hand rule to determine the direction of the angular momentum. Choices: +x,-x, +y,…

Q: Question 1 A 300-N force is applied at A as shown, (a) Calculate the moment of the 300-N force about…

Q: 4. Two identical disks (same mass and radius) have a common axis. Initially one of the disks is…

A: in this question, we use conservation of energy. .

Q: 8. A disk is rotating horizontally about its center. Its mass is M = 2.5 kg, the radius is 2.0 m and…

A: a) The required angular momentum is,

Q: Q1: Determine the Moment of the Force 800N shown in Fig, about point O By at least 3 ways. 875 mm…

A: First divide the Force in its x and y components. Fx = 800 sin 30 = 400N Fy = 800 cos 30 = 692.82N

Q: A man is pushing a loaded rotating tray with radius of 0.5m on top of a table with a force of F =…

Q: [LO 23.0, 23.1]A 2 kg rock moves clockwise (viewed from above) in a circle radius 3 m around the…

A: Given: The mass of the rock is 2 kg. The speed of the rock is 2 m/s. The distance of the point from…

Q: Problem 4: Modern wind turbines generate electricity from wind power. The large, massive blades have…

Q: 4. A dancer on ice spins faster when she folds her arms. This is due to A an increase in kinetic…

A: Concept Torque =Rate of change of angular momentumτ =dLdtIf no external torque is applied τ =0dLdt…

Concept explainers

Torque

Torque is the rotational equivalent of linear force in physics and mechanics. Based on the course of study, it is also known as the moment of force, rotational force, or turning effect.

Question

1. Calculate the moment and direction about point A for each of the scenarios below.
100 N
A)
C)
10 m
A
10 m
100 N
100 N
B)
10 m
D)
4 m
A
A
6 m
200 N
200 N

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.

Similar questions

A bicycle is turned upside down while its owner repairs a flat tire on the rear wheel. A friend spins the front wheel, of radius 0.381 m, and observes that drops of water fly off tangentially in an upward direction when the drops are at the same level as the center of the wheel. She measures the height reached by drops moving vertically (Fig. P10.74 on page 332). A drop that breaks loose from the tire on one turn rises h = 54.0 cm above the tangent point. A drop that breaks loose on the next turn rises 51.0 cm above the tangent point. The height to which the drops rise decreases because the angular speed of the wheel decreases. From this information, determine the magnitude of the average angular acceleration of the wheel.
Math Review (a) Convert 47.0 to radians, using the appropriate conversion ratio. (b) Convert 2.35 rad to degrees. (c) If a circle has radius 1.70 m, what is the are length subtended by a 47.0 angle? (See Sections 1.5 and 7.1.)
Unreasonable Results An advertisement claims that an 800-kg car is aided by its 20.0-kg flywheel, which can accelerate the car from rest to a speed of 30.0 m/s. The flywheel is a disk with a 0.150-m radius. (a) Calculate the angular velocity the flywheel must have if 95.0% of its rotational energy is used to get the car up to speed. (b) What is unreasonable about the result? (c) Which premise is unreasonable or which premises are inconsistent?
A scientist arriving at a hotel asks a bellhop to carry a heavy suitcase. When the bellhop rounds a corner, the suitcase suddenly swings away from him for some unknown reason. The alarmed bellhop drops the suitcase and runs away. What might be in the suitcase?
A disk of mass m is spinning freely at 6.00 rad/s when a second identical disk, initially not spinning, is dropped onto it so that their axes coincide. In a short time the two disks are corotating. (a) What is the angular speed of the new system? (b) If a third such disk is dropped on the first two, find the final angular speed of the system.
Additional Problems A typical propeller of a turbine used to generate electricity from the wind consists of three blades as in Figure P8.75. Each blade has a length of L = 35 in and a mass of m = 420 kg. The propeller rotates at the rate of 25 rev/min. (a) Convert the angular speed of the propeller to units of rad/s. Find (b) the moment of inertia of the propeller about the axis of rotation and (c) the total kinetic, energy of the propeller. Figure P8.75
Consider the Earth-Moon system. Construct a problem in which you calculate the total angular momentum of the system including the spins of the Earth and the Moon on their axes and the orbital angular momentum of the Earth-Moon system in its nearly monthly rotation. Calculate what happens to the Moon's orbital radius if the Earth's rotation decreases due to tidal drag. Among the things to be considered are the amount by which the Earth's rotation slows and the fact that the Moon will continue to have one side always facing the Earth.
Competitive divers pull their limbs in and curl up their bodies when they do flips. Just before entering the water, they fully extend their limbs to enter straight down. Explain the effect of both actions on their angular velocities. Also explain the effect on their angular momenta.
A particle of mass 0.400 kg is attached to the 100-cm mark of a meter stick of mass 0.100 kg. The meter sack rotates on a horizontal, frictionless table with an angular speed of 4.00 rad/s. Calculate the angular momentum of the system when the stick is pivoted about an axis (a) perpendicular to the table through the 50.0cm mark and (b) perpendicular to the table through the 0-cm mark.
Two children (m = 30.0 kg each) stand opposite each otheron the edge of a merry-go-round. The merry-go-round, whichhas a mass of 1.80 102 kg and a radius of 1.5 m, is spinningat a constant rate of 0.50 rev/s. Treat the two children and themerry-go-round as a system. a. Calculate the angular momentum of the system, treating each child as a particle. b. Calculatethe total kinetic energy of the system. c. Both children walkhalf the distance toward the center of the merry-go-round. Calculate the final angular speed of the system.
A particle of mass m moves along a straight line with constant velocity v0 in the x direction, a distance b from the x axis (Fig. P13.10). (a) Does the particle possess any angular momentum about the origin? (b) Explain why the amount of its angular momentum should change or should stay constant. (c) Show that Keplers second law is satisfied by showing that the two shaded triangles in the figure have the same area when . Figure P13.10
Three children are riding on the edge of a merry-go-round that is 100 kg, has a 1.60-m radius, and is spinning at 20.0 rpm. The children have masses of 22.0, 28.0, and 33.0 kg. If the child who has a mass of 28.0 kg moves to the center of the merry-go-round, what is the new angular velocity in rpm?