A ball of mass m, =5.7 kg and a block of mass m, =3.1 kg are connected with a lightweight string over a pulley with moment of inertia I and radius R=0.25m. The coefficient of kinetic friction between the table top and the block of mass m, is uy = 0.5. If the magnitude of the acceleration is a=3.0 m/s2. a)What are the tensions T, and T, in the string. N T2= N b)Calculate the moment of inertia of the pulley. I= kg m2 c) What is the change of the kinetic energy of the system if the system is released from rest and the ball decends a distance h=5.4 m downward. ΔΚ -

A ball of mass m, =5.7 kg and a block of mass m, =3.1 kg are connected with a lightweight string over a pulley with moment of inertia I and radius R=0.25m. The coefficient of kinetic friction between the table top and the block of mass m, is uy = 0.5. If the magnitude of the acceleration is a=3.0 m/s2. a)What are the tensions T, and T, in the string. N T2= N b)Calculate the moment of inertia of the pulley. I= kg m2 c) What is the change of the kinetic energy of the system if the system is released from rest and the ball decends a distance h=5.4 m downward. ΔΚ -

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 112AP: A system of point particles is rotating about a fixed axis at 4 rev/s. The particles are fixed with...

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Concept explainers

Angular speed, acceleration and displacement

Angular acceleration is defined as the rate of change in angular velocity with respect to time. It has both magnitude and direction. So, it is a vector quantity.

Angular Position

Before diving into angular position, one should understand the basics of position and its importance along with usage in day-to-day life. When one talks of position, it’s always relative with respect to some other object. For example, position of earth with respect to sun, position of school with respect to house, etc. Angular position is the rotational analogue of linear position.

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A ball of mass m, =5.7 kg and a block of mass m, =3.1 kg are connected with a lightweight string over a pulley with moment of inertia I and radius R=0.25m. The coefficient of kinetic friction between the table top and the block of mass m, is uy = 0.5. If the magnitude
of the acceleration is a=3.0 m/s2.
a)What are the tensions T, and T, in the string.
N
T2=
N
b)Calculate the moment of inertia of the pulley.
I=
kg m2
c) What is the change of the kinetic energy of the system if the system is released from rest and the ball decends a distance h=5.4 m downward.
ΔΚ -

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