The 80-lb boy stands on the beam and pulls on the cord with a force large enough
Question:
The 80-lb boy stands on the beam and pulls on the cord with a force large enough to just cause him to slip. If the coefficient of static friction between his shoes and the beam is (?s)p?= 0.4, determine the reactions at A and B. The beam is uniform and has a weight of 100 lb. Neglect the size of the pulleys and the thickness of the beam.
13 12 B. 60° 5 t- -3 ft- 1 f' 4 ft -
Step by Step Answer:
Equations of Equilibrium and Frictions When the boy is on the verge to slipping then F D s D ...View the full answer
Related Video
In Physics, a force is an influence that can change the motion of an object. A force can cause an object with mass to change its velocity, i.e., to accelerate. Force can also be described intuitively as a push or a pull. A force has both magnitude and direction, making it a vector quantity. In this video, the concept of force and torque is demonstrated with the practical application of changing the flat tire of the car.
Students also viewed these Civil Engineering questions
-
The 80-lb boy stands on the beam and pulls with a force of 40 lb. If (? s ) D = 0.4, determine the frictional force between his shoes and the beam and the reactions at A and B. The beam is uniform...
-
If the coefficient of static friction between your coffee cup and the horizontal dashboard of your car is s = 0.800, how fast can you drive on a horizontal roadway around a right turn of radius 30.0...
-
If the coefficient of static friction between a car's tires and the pavement is 0.65, calculate the minimum torque that must be applied to the 66-cm-diameter tire of a 1080-kg automobile in order to...
-
Operating Rules. Indicate whether the following statements are true or false. If the statement is false, explain why. a. Since most corporations make distributions only when they are profitable and...
-
Why did Apple decide to outsource much of its production to companies around the world rather than build its own production facilities?
-
The thermo gravimetric trace below shows mass loss by Y2(OH)5Cl xH2O upon heating. In the first step, waters of hydration are lost to give 8.1% mass loss. After a second decomposition step, 19.2% of...
-
The June 30, 2010, adjusted trial balance of Energized Espresso, Inc., is shown next. Requirements 1. Prepare the June closing entries for Energized Espresso, Inc. 2. Calculate the ending balance in...
-
Many years ago, Minnow Bait and Tackle issued preferred stock. The stock pays an annual dividend equal to $6.80. If the required rate of return on similar-risk investments is 8 percent, what should...
-
Van Nuys Health System (VNHS) plans to construct a new building. The total cost of this capital project is $6,000,000. VNHS will finance the project with $3,000,000 from its equity and a 10 year term...
-
On January 4, 2017, Macys Inc., faced with declining revenues and profits announced a series of actions it planned to implement to try to improve its operations. In its press release the company...
-
The spool has a mass of 200 kg and rests against the wall and on the floor. If the coefficient of static friction at B is (? s ) B = 0.3, the coefficient of kinetic friction is (? k ) B = 0.2, and...
-
The tongs are used to lift the 150-kg crate, whose center of mass is at G. Determine the least coefficient of static friction at the pivot blocks so that the crate can belifted. 275 mm 30 500 mm D....
-
What format to use for stating a cause of action?
-
For the IKEA Business Model Analysis. What is market structure in this setting? How do they maintain product differentiation, market power? Is elasticity high/low? Are there submarkets with distinct...
-
How information is communicated both internally and externally influences the organization's reputation and culture?
-
After analyzing the population data of a bacteria colony, a microbiologist determines that the population of the bacterial colony can be modeled by the equation P(t) = 500e0.1t. (a) What is the...
-
On October 1, Sheridan Corporation's stockholders' equity is as follows. Common stock, $5 par value $378,000 Paid-in capital in excess of par-common stock 20,000 Retained earnings Total stockholders'...
-
You bought the house for $800,000 exactly five years ago. To purchase this house, you made 25 percent down and then, got a 30-year fixed rate mortgage loan. The mortgage rate was 6 percent. What...
-
You leave your house and walk east for \(1.0 \mathrm{~h}\), northeast for \(1.5 \mathrm{~h}\), south for \(1.0 \mathrm{~h}\), and southwest for \(2.5 \mathrm{~h}\), always moving at the same speed....
-
A consumer magazine is evaluating five brands of trash compactors for their effectiveness in reducing the volume of typical household products that are discarded. In the experiment, each block...
-
An aircraft maintenance technician walks past a tall hangar door that acts like a single slit for sound entering the hangar. Outside the door, on a line perpendicular to the opening in the door, a...
-
Determine the force in each member of the truss and state if the members are in tension or compression. Set P1 = 0, P2 = 1000lb. SHAPE * MERGEFORMAT 10 ft -10 ft- 10 ft -10 ft P2
-
Determine the force in each member of the truss and state if the members are in tension or compression. Set P1 = 800lb and P2 = 400lb. -6 ft -8 ft 8 1t
-
Determine the force on each member of the truss and state if the members are in tension or compress. Set P1 = 500lb and P2 =100lb. 6ft 8it P:
-
The following are a few Christian viewpoints on Debt "Debt is considered slavery " Proverbs 22:7, I Corinthians 7:23 "Debt was considered a Curse", Deut 28: 1,2,12, Deut 28: 15, 43, 44 "Debt Presumes...
-
11. A stone is carved into a cylindrical shape, where the thickness of the cylinder is much smaller than the radius which is 28 cm. This cylindrical stone has a mass of 2.8 kg and is spinning at a...
-
10. A 0.270 kg ball has a radius of 1.35 cm. It is spinning about an axis that runs through the center of the ball. If the angular velocity of the spinning ball is 10.4 rad/s clockwise, what is the...
Study smarter with the SolutionInn App