Figure CQ8.14

Q: A light rod of length 2L is free to rotate in a verticalplane about a frictionless pivot through its…

A: Given,The masses are m1, m2 and the total length of the rod is 2L.

Q: Chuck Norris’ leg angularly accelerates 3000°/s2 around the hip joint during a roundhouse kick in…

A:

Q: Two wheels of moment of inertia 9.7 kg.m2 and 2.1 kg.m2 are set in rotation with angular speed 7.3…

A: Moment of inertia of first wheel , I1 = 9.7 kg m2  Moment of inertia of second wheel , I2 = 2.1 kg…

Q: Figure skater rotating at 5rad/s with arms extended, moment of inertia is 2.25 kg * m^2. The skater…

A: The formula for the angular momentum is:

Q: Jennifer decided to install a ceiling fan in the master bedroom. After a laborious installation, she…

A: initial angular speed (w) = 0 final angular speed = 120 rev/min  = 2 rev/sec  = 12.57 rad/s t = 20…

Q: An automatic dryer spins wet clothes at an angular speed of 4.5 rad/s. Starting from rest, the dryer…

A:

Q: In a popular amusement parkride, a rotating cylinder ofradius 3.00 m is set in rotationat an angular…

A:

Q: kg ball and a 2.0 kg ball are connected by a 0.90-m-long rigid, massless rod. The rod is rotating cw…

A: Givenm1=1 kgm2=2 kgd=0.9 mω=25 rpm=25×2π60 rad/s

Q: The propeller of an aircraft is spinning at 15 rev/s when the pilot shuts off the engine. The…

A: Formula of family in terms of time is as follows; ω=ω0+αt…

Q: The dung beetle is known as one of the strongest animals for its size, often forming balls of dung…

A: Radius (r) = 2.05 cm = 0.0205 m Speed (v) = 6.05 cm/s = 0.0605 m/s

Q: Every summer, your family goes to Callaway Gardens to see the acrobats in the Flying High Circus.…

A: Conservation of angular momentum: The angular momentum of a system is conserved if there is no net…

Q: A DVD is rotating at 440 rpm. What is the angular momentum of the DVD if has a radius of 6.00 cm and…

A:

Q: A freely rotating satellite leaves the cargo bay of the space shuttle. The satellite makes 2…

A:

Q: A 1.0 kg ball and a 2.0 kg ball are connected by a 0.90-m-long rigid, massless rod. The rod is…

A:

Q: What is the magnitude of the angular momentum of a 500 g, 0.5 m long bar rotating at 60 rpm about an…

A: The expression for the required magnitude angular momentum is,

Q: An ice skater rotates at 2.3 rev/s with arms outstretched. He collects his arms and spins at 15.6…

A: Moment of inertia, in physics, quantitative measure of the rotational inertia of a body—i.e., the…

Q: An ice skater starts a spin with her arms stretched out to the sides. She balances on the tip of one…

A: If no external torque acts on the system, then the total angular momentum of the system remains…

Q: An object of mass m1 = 4.00 kg isconnected by a light cord to anobject of mass m2 = 3.00 kg on…

A: The sum of forces acting along y dand x direction is

Q: A space station shapedlike a giant wheel hasa radius of 100 m anda moment of inertia of5.00 x 108 kg…

A:

Q: A uniform, solid flywheel of radius 1.4 m and mass 15 kg has an angular momentum of 60 m² kg What is…

A: Given by Radius (r) = 1.4m Mass(m) = 15kg Angular momentum = 60kg m/s2 We have to find out angular…

Q: In a high school swim competition, a student takes 2.0 s to complete 2.5 somersaults. Determine the…

A: Given : Time t = 2 s No. of somersaults = 2.5 angular displacement : θ=2πr=2×3.14×2.5=15.7 radians

Q: A 44 kg girl is seated in the middle of a 4.6 m diameter merry-go-round. The merry-go-round disc has…

A: Given,

Q: A skater has a moment of inertia of 120 kg/m ² when his arms are outstretched and a moment of…

A:

Q: A skater during her finale can increase her rotation rate from an initial rate of 0.4 rot/sec to a…

A:

Q: and (2) the angular pe 4. A discus thrower (Fig rest to a speed of 25.0 Assume the discus mo radius.…

A: Given,

Q: What is the magnitude of the angular momentum of a 300 g, 2.0 m long bar rotating at 100 rpm about…

A:

Q: Three children are riding on the edge of a merry-goround that is 100 kg, has a 1.60-m radius, and is…

A: Given data: Mass of the marry – go – round, M=100 kg Radius, r=1.60 m Initial angular velocity,…

Q: An ice skater is spinning at a rate of 2 rad/sec.  She extends her arms and increases her moment of…

A: Initial and final moment of inertia= 1.22 & 2.5 Kgm2

Q: . Stars form when a large rotating cloud of gas collapses. What happens to the angular speed of the…

A:

Q: Two children are on the edge of a merry-go-round. One child weighs 25kg, the other 30kg. If the…

A: Using conservation of angular momentum Iinitial * w = Ifinal * W (moment of inertia of disk + moment…

Q: A uniform disk of mass 5.20 kg has a radius of 0.150 m and spins with a frequency of 0.650 rev/s.…

A:

Q: Two girls ?1 = 21.0 kg and ?2 = 29.0 kg are standing 1.00 m away from the center of a rotation…

A: Given:  mass of first girl, m1 = 21 kg  mass of second girl, m2 = 29 kg  mass of disc, M = 350 kg…

Q: A merry-go-round is a common piece of playground equipment. A 3.0-mm-diameter merry-go-round, which…

A: The objective of the question is to find the angular velocity of the merry-go-round after John jumps…

Q: The axis of rotation of a thin plate is located at the left side, as shown in the figure. Calculate…

A: Given values: Length L = 5.00 cm Width w = 3.00 cm Mass density = 1.25 g/cm2

Q: A 200g toy car is placed on a narrow 30cm radiustrack with wheel grooves that keep the car moving in…

A:

Q: The top in Figure P8.55 has amoment of inertia of 4.00 x10-4 kg . m2 and is initially atrest. It is…

A: We know,

Q: The three 550 g masses in the daigram are connected by massless, rigid rods to form a triangle. What…

A:

Q: I want to spin several 2.5kg object. I have 157J to use in spinning each object. Find and compare…

A: angular spee is

Q: Suppose you are standing on the edge of a large freely rotating turntable.  What happens if you walk…

A: According to conservation of angular momentum If no net torque applied on the system then angular…

Q: uniform ring with the mass of 4 kg and a radius of 20 cm is rotating at a rate of 20 rad/s. What is…

A: Mass m = 4kg  Radius R = 20cm  Radius R = 0.20 m    Angular speed =20 rad/s.  L = I ω  L = Mr2 ω  L…

Q: An Atwood’s machine consistsof blocks of masses m1 =10.0 kgand m2 = 20.0 kg attached by a…

A: The figures shows that the system will accelerate in all direction,

Q: An 8.00-cm-diameter, 370 gg solid sphere is released from rest at the top of a 1.50-m-long, 20.0 ∘∘…

A: Given data : The diameter of the solid sphere is given as d = 8cm d=8cm; r=d2=8cm×1m100cm2=0.04cm…

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.