Figure CQ8.14

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: A student holds a bike wheel and starts it spinning with an initial angular speed of 7.0 rotations…

A:

Q: A tire travels through a displacement of 225 radians in 9.0 s. What is the angular acceleration if a…

A:

Q: A playground merry-go-round has a mass of 136 kg and a radius of 1.60 m and it is rotating with an…

A: Given:- Mass of the merry-go-round M=136 kg. Radius of the merry-go-round R=1.60 m. Initial angular…

Q: A 30 kg child stands on the edge of a stationary merry-go-round of mass 100 kg and radius 2.0 m.…

A:

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

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: Zorch, an archenemy of Superman, decides to slow Earth's rotation to once per 29 h exerting a force…

A: It is an easy question. Now first thing we have to do is to convert time period to angular velocity…

Q: A figure skater can increase her spin rotation rate from 28 rpm to 190 rpm.  Given that her initial…

A: Given: Initial rate of rotation ω1= 28 rpm Final rotation ω2=190 rpm The initial moment of inertia…

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 playground merry-go-round with a radius of 1.80 m has a mass of 120 kg and is rotating with an…

A:

Q: A 4.54 kg, 33.8 cm radius fly-wheel is initially spinning at a speed of 754 rpm. How much torque…

A:

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 60 kg skater begins a spin with an angular speed of 6.0 rad/s. By changing the position of her…

A: Given, mass of the skater, m = 60 kg angular speed of the skater, ωo = 6.0 rads moment of inertia of…

Q: A 43 kg boy is seated at the edge of a 5.0 m diameter merry go round. The merry-go-round disc has a…

A: mass of boy, m = 43 kg  mass of disc, M = 90kg  radius, R = 2.5 m  Angular velocity, w = 18 rpm…

Q: A professor sits on a rotating stool that is spinning at 10.0 rpm while she holds a heavy weight in…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

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: A standard LP record has a radius of 16 cm and a mass of 162 g. For an LP rotating at 32 rpm, what…

A:

Q: An ice dancer with her arms stretched out starts into a spin with an angular velocity of 2.6 rad/s.…

A: here we can use conservation of angular momentumI1=2.77 kg m2I2=1.62 kg m2ω1=2.6 rad/sω2=?by angular…

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: 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 figure skater can increase her spin rotation rate from 20 rpm to 175 rpm. Given that her initial…

A:

Q: A turntable is off and is not spinning. A 1.5 g ant is on the disc and is 10 cm away from the…

A: Soluction

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: A 0.74-mm-diameter solid sphere can be rotated about an axis through its center by a torque of 10.8…

A: Given that,A solid sphereDiameter, d=0.74 mm=0.74×10-3 mTorque,τ=10.8 N.mω= 150 revolution/14…

Q: A 4.03 kg, 39.2 cm radius fly-wheel is initially spinning at a speed of 717 rpm. How much torque…

A:

Q: An aluminum cylinder of radius 12m, length of 20m, and thickness of 0.02m is spinning in space at…

A:

Q: rad/s² 2. In landing, the rotor of a helicopter slows from an angular does the rotor travel during…

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: A playground merry-go-round has a mass of 100 kg and a radius of 1.80 m and it is rotating with an…

A: Mass of the merry-go-round,  Radius of the merry-go-round,  Initial angular velocity,  Mass of the…

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: A 100 g disk with a diameter of 10 cm rotates about an axis through its center of mass with 0.2 J of…

A: We know that-Moment of inertia of disk, I=12MR2given, M=100 g=0.1 kgR=10 cm2=5 cm=5×10-2 mthen,…

Q: A 110 g Frisbee is 33 cm in diameter and has about half its mass spread uniformly in a disk and the…

A: Given : m=110 g r=33 cm ω=700 rpm    = 700 x 2π60rad/sm1=m2=55gm→mass of the frisbeer→radius of the…

Q: A figure skater performs a twisting jump. She rotates around her longitudinal axis 2 times in 0.65…

A: Given data:  Angular displacement (Δθ) = 2 rev Time (t) = 0.65 s Required: The average angular…

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: Two astronauts(Fig. P8.80), each having a mass M, are connected by a ropeof length d having…

A: (a)

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: A yo­ yo falls through a distance of 0.35 m as the string wrapped around its outer edge unwinds. If…

A: PE=KErot+KElinearmgh=12Iω2+12mv2=1212mv2vr2+12mv2=34mv2v=43gh

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.