Interactive solution 9.37 presents a method for modeling this problem. multiple-concept example 10 offers useful background for problems like this one. a cylinder is rotating about an axis that passes through the center of each circular end piece. the cylinder has a radius of 0.130 m, an angular speed of 78.0 rad/s, and a moment of inertia of 1.25 kg·m2. a brake shoe presses against the surface of the cylinder and applies a tangential frictional force to it. the frictional force reduces the angular speed of the cylinder by a factor of 6 during a time of 3.00 s. (a) find the magnitude of the angular deceleration of the cylinder. (b) find the magnitude of the force of friction applied by the brake shoe.

21.67 rad/s²

208.36538 N

Explanation:

= Final angular velocity =

= Initial angular velocity = 78 rad/s

= Angular acceleration

= Angle of rotation

t = Time taken

r = Radius = 0.13

I = Moment of inertia = 1.25 kgm²

From equation of rotational motion

The magnitude of the angular deceleration of the cylinder is 21.67 rad/s²

Torque is given by

Frictional force is given by

The magnitude of the force of friction applied by the brake shoe is 208.36538 N

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.

answer

procedural programming, object-oriented programming

explanation

procedural programming is a type of computer programming language that specifies a series of well structured steps and procedures   within its development period of time. it contains a systematic order of statements, functions and commands to complete a computational task or program. it is centered on creating procedures. while object oriented programming is a programming language that is centered on creating objects rather that actions and data rather than logic.. it has four principles which are inheritance, polymorphism, abstraction and encapsulation