A body of weight 500N is prevented from sliding down aplane inclined at 20 to the horizontal by the application ofa force of 50 N acting upwards and parallel to the plane.Find the coefficient of friction.If the body is to be pulled up the plane by a force actingat an angle of 30 to the horizontal, find the value of theforce, and the efficiency of the lift.IMECHE

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Answered: A body of weight 500N is prevented from…

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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Q1: A cylinder of (75N) weight, (r=65cm) is to entrust to a horizontal surface its coefficient of friction (u=0.4) and a smooth vertical surface as shown in figure .Determine the frictional force 5625N.Cm A
A body weighing 500N is held by a rope that passes over a horizontal drum, the angle of contact being 150°. If the coefficient of friction between the rope and the drum is 0.3 find the least force that will hold the body.
An elevator moves downward at a speed of 1 ft/s. If the total weight is 4500 lbf, find the cushionforce needed to stop the elevator in 2 inches. Use the rolling friction of 0.02 of the verticalweight
Work-energy principle A 10 lb package moves down a conveyor belt and transition to a ramp. The angle of both the conveyor belt and the ramp = 12 degrees. (The length of the ramp = 10 ft (This is different than in the figure). The coefficient of kinetic (sliding) friction is mu_k = 0.40. Compute the work done by the friction as it slides on the ramp. Compute the height difference from the top to the bottom of the ramp. Compute the gravitational potential energy at the top relative to the bottom. The velocity at the end of the ramp = 2 ft/s. Compute the kinetic energy at the bottom. Use the work-energy principal to compute the kinetic energy at the top of the beginning of the ramp. Then, compute what the velocity at the top must have been.
Consider the system shown below. The incline plane is fixed and the coefficient kinetic friction between M and 2M is ?1, and coefficient kinetic friction between the plane and 2M is ?2. Let M=2.0kg, ?=22o, ?1=0.14, and ?2=0.25. (a) What is the magnitude of the frictional force on mass M? (b) What is the magnitude of the total frictional force on mass 2M? (c) What is the acceleration of mass M? (d) What is the acceleration of mass 2M?
Please answer and show how you got it You are on an elevator fixed to a wall that can move up and down freely while you pull with a force of 150 N on a massless rope (the orange line in the diagram below) with length L. This rope is connected to one end of a beam with the same length, L, and mass m=20 kg. The left end of the beam is in contact with the same wall the elevator is on and the coefficient of static friction =0.2 between the beam and the wall. See diagram below for a representation of the situation and note that free fall acceleration points directly downward 0 L Part A) Label all the forces acting on the beam and discuss the direction of any torques exerted on the beam about the contact point between the beam and the wall Part B) What is the maximum angle the beam can subtend with respect to the horizontal _m such that it will just begin to slip? Potentially useful trig identities are sin(2x)=2sin(x)cos, sin(180-x)=sin(x), sin(90+x)=cos(x)
I need the answer as soon as possible
A body of mass 2 kg slides from the top of a rough inclined surface with a coefficient of friction of 0.2 and inclined at an angle of 60 as shown in the figure. Find: 1. The magnitude of the frictional force 2. The acceleration of the body
A block Rof mass 100 kg is placed on a block a Sof mass 150 kg as shown in the figure. Block R is tied to the wall by a massless and inextensible string PQ. If the coefficient of static friction for all surfaces is 0.4, the minimum force F (in kN) needed to move the block Sis Q R.
A box of mass 12 kg standing on horizontal ground is pushed by a horizontal force of 30 N. If the coefficient of friction is 0.25, will the box move?
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The component of the force along the inclined plane due to mass of the body on a inclined plane is 500N. The net force acting on the body is 100N.The force of friction is Select one: 5 N 400 N 600 N 0.2 N

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