is pressedAn electric disk sander (see Fig.against a surface with a force of 50 N. The coefficient offriction between the sandpaper and the surface is 0.6 andthe diameter of the sanding disk is 200 mm. Determine thetorque that the motor must develop to overcome the de-veloped friction.50 N200 mm

Given: Force, F=50 N The diameter of the disk, D=200 mm The coefficient of friction between…

Answered: is pressed An electric disk sander (see…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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1. A uniform ladder of mass m and length is leaning at rest against a wall at an angle 0. The coefficient of static friction between the floor and the ladder is μ5₁, and that between the wall and the ladder is Ms2. (a) Draw an FBD of the ladder when it is at rest. (b) Find out the measure of in terms of usi and μs2. (Hint: Consider torque and rotational equilibrium) (c) What is the trajectory, i.e., path of motion, of the center of the ladder as it slides down? (d) Given that the instantaneous speed of the top of the ladder is VÀ at some moment as it slides down, what are the speeds of the other end and the center of the ladder at the same moment? A 2. A ring with mass m is attached to a string. The string holds a block M as well through a pulley system. m is moving downward with an acceleration a' relative to the string. What is the friction between the ring m and the string in terms of g? The pulley and string are both ideal. mo M
A force of 347 N is exerted on a box of 5 kg on the floor. If the coefficient of friction is 0.37, calculate the Frictional force.
(a) Explain the 2 types of friction using a suitable example. (b) A box of mass 100 kg is placed on a 30 degrees inclined plane. The applied horizontal force is 100 N and the coefficients of static and kinetic friction are 0.4 and 0.2 respectively. Calculate the normal and frictional forces acting on the box
While a vehicle with a mass of 2350 kg is moving at 120 km/h, suddenly braking It stops with an acceleration of -9.18 m/s2. There are two brake pads on each wheel of the vehicle. The friction coefficient between the brake pad and the brake disc is 0.3. During braking, assume 20 N/mm2 is the pressure on the brakke pad, find the area of the pad. Safety coefficient will be taken as 3
-. A body having a mass of 40 kg rests on a horizontal table and it is found that the least horizontal force required to move the body is 90 N. What is the coefficient of friction?
Find the value of coefficient of friction if friction force is 200 N and Normal force is 780 N
A 75 lb horizontal force is exerted on a 150 lb rested chair. The coefficient of static friction between the chair and the floor is 0.55. Determine the static frictional force action on the chair. A horizontal force is exerted on a 150 lb rested chair. the coefficient of static friction between the chair and the floor is 0.55. Determine the maximum horizontal force that can be applied to the chair before it moves.
Find the value of coefficient of friction if friction force 34 N and normal force is 120 N
Parvinbhai
Answer 5, if you can’t answer 4
A flat belt with a width of 120 mm and a thickness of 5 mm transmits power from a driving pulley with a diameter of 250 mm to a driven pulley with a diameter of 700 mm. The mass per unit length of the belt is 2.1 kg/m, and the coefficient of friction is 0.25. The input power of the belt is 60 kW at 1000 rpm. Calculate the following when the center distance is 3.5 m. (a) Maximum tensile stress of the belt(b) Axial load on each pulley
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