SolidsAluminumIron and SteelCopperLeadGoldSilverConcreteGraniteWoodGlassIceBoneLiquidsWater (4° C)BloodSea waterMercuryEthyl alcoholGasolineGasesAirHeliumCarbon dioxideSteamDENSITIES OF SUBSTANCESDensity (kg/m³).27007800890011300193001050023002700300-9002400-28009171700-2000100010501025136007906801.290.1791.980.598 6. A ball on a string has a moment of inertia of 14 kg · m². Itexperiences a torque of21 m N.a. What is the angular acceleration of the ball?b. The ball starts from rest. What angular velocity does ithave after 3.5 seconds?c. What angular momentum does the ball have after 3.5seconds?

Torque, τ = 21 mNMoment of inertia, I = 14 kg.m²

6. A ball on a string has a moment of inertia of 14 kg · m². It experiences a torque of 21 m N. a. What is the angular acceleration of the ball? b. The ball starts from rest. What angular velocity does it have after 3.5 seconds? c. What angular momentum does the ball have after 3.5 seconds?

6. A ball on a string has a moment of inertia of 14 kg · m². It experiences a torque of 21 m N. a. What is the angular acceleration of the ball? b. The ball starts from rest. What angular velocity does it have after 3.5 seconds? c. What angular momentum does the ball have after 3.5 seconds?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter10: Fixed-axis Rotation

Section: Chapter Questions

Problem 38P: During a 6.0-s time interval, a fly-wheel with a constant angular acceleration turns through 500...

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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

Solids
Aluminum
Iron and Steel
Copper
Lead
Gold
Silver
Concrete
Granite
Wood
Glass
Ice
Bone
Liquids
Water (4° C)
Blood
Sea water
Mercury
Ethyl alcohol
Gasoline
Gases
Air
Helium
Carbon dioxide
Steam
DENSITIES OF SUBSTANCES
Density (kg/m³).
2700
7800
8900
11300
19300
10500
2300
2700
300-900
2400-2800
917
1700-2000
1000
1050
1025
13600
790
680
1.29
0.179
1.98
0.598

6. A ball on a string has a moment of inertia of 14 kg · m². It
experiences a torque of
21 m N.
a. What is the angular acceleration of the ball?
b. The ball starts from rest. What angular velocity does it
have after 3.5 seconds?
c. What angular momentum does the ball have after 3.5
seconds?

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