A 30-kg box is sitting on an inclined surface asIf the coefficient of friction betweenshown in Fig.the box and the surface is 0.50 and the angle a = 60°, de-termine the maximum force T for which the box will be inequilibrium. Is impending motion by tipping or by slip-ping?T0.6 m20°30 kg0.9 m

A free-body diagram of the box is given as, On using force equilibrium in normal to the inclined…

Answered: A 30-kg box is sitting on an inclined…

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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A box of mass 10 kg rests in limiting equilibrium on a rough plane inclined at 20° above the horizontal. Find the coefficient of friction between the box and the plane.
The Figure Q2 shows a ball and block with masses M1=10kg and M2, respectively. The block and ball are connected with a cable and pulley system. The coefficient of static friction for all contacting surface is 0.3. i) Determine the range of the mass of block so that the system is in M1 = 10 Kg equilibrium. ii) Determine the tension in the cable. M2 Hs= 0.3 Comment on your answer at question 2(i). 75%
Please provide the correct solution, and include free body diagram.
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Question 3(a) The non uniform XYZ bar which weighs 155 kg has its centre of gravity G at a distance 4 m from X. This bar rests on a homogeneous crate P. The static coefficient of friction between the bar and the crate is 0.31 while the same between the crate and the floor is 0.22. Determine the mass of the lightest crate P (in kilograms) that can be used to support this non uniform bar in the position shown in Figure 3. The height of the crate is 4.32 m and the length of the bar is 8.59 m. 4 m 3 m - 1 m - Figure 3 Question 3(b) Take an example from everyday life where you can identify the application of the concepts we learn in the "Dry friction" module. Sketch this example and discuss about the effect of friction on that particular scenario. Sketch does not have to be drawn to a scale. (Description should be 250 words or less).
Situation 1: A 50 N block rests on a surface that is inclined by e degrees. If u: = 0.35 and uk = 0.15, determine the following: A. The maximum e where the motion impends (degrees) B. If e = 15°, what is the frictional force between the block and the incline? (N) C. If e = 25°, what is the frictional force between the block and the incline? (N)
A 75-kg man starts climbing a ladder that leans If the weight of the against a wall as shown in Fig. ladder is negligible, determine how far up the ladder the man can climb before the ladder starts to slip if The coefficient of friction at the bottom end of the lad- der is increased to 0.40 by placing a piece of rubber between the ladder and the floor. 5 m 60°
Given the figure shown below, what is the mass of block B on the smooth incline if the system is in static equilibrium? A rope runs from block B up around the frictionless pulley at A down to a 10 kg counterweight. A 1 m B- 1m 10 kg 45°
Consider the situation shown where a 15-kg box is to be held on a steep vertical slope by a cord that can withstand 80 N. Will the box be held or will the cord snap (i.e. exceed 80 N)? The coefficient of static friction between the box and slope is 0.3. Note: more sophisticated methods exist but do a simple analysis using statics alone and a little reasoning. 60
250 kg concrete wheel with a radius of 1.50 m is being pulled up a hill by a 725 kg cow, with a rope attached to the wheel and the cow. There is a 35.5 cm tall rock protruding out of the hill. Calculate the tension in the rope when the barrel is just starting to lift off of the hill to go over the protruding rock? What's the minimum coefficient of static friction between the cow and the hill for the cow to be able to pull the barrel over the rock?
A 10 m long beam weights rests against the smooth wall as shown. The weight of the beamis 2 N. The coefficient of static friction between the beam and the ground is 1.4. Determine themaximum magnitude of force P that can be applied before the beam slides.

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