Determine the minimum tension in the rope at point A which is necessary to maintain equilibrium. Express your answer to three significant figures and include the appropria units. μÅ 99999999 ? TA= 12.8 KN Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B Determine the minimum tension in the rope at point B which is necessary to maintain equilibrium. Express your answer to three significant figures and include the appropria units.

Determine the minimum tension in the rope at point A which is necessary to maintain equilibrium. Express your answer to three significant figures and include the appropria units. μÅ 99999999 ? TA= 12.8 KN Submit Previous Answers Request Answer X Incorrect; Try Again; 5 attempts remaining Part B Determine the minimum tension in the rope at point B which is necessary to maintain equilibrium. Express your answer to three significant figures and include the appropria units.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.90RP: The screw of the clamp has a square thread of pitch 0.16 in. and a mean diameter of 0.6 in. The...

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The screw of the clamp has a square thread of pitch 0.16 in. and a mean diameter of 0.6 in. The coefficient of static friction between the threads is 0.4. Determine (a) the torque C0 that must be applied to the screw in order to produce a 28-lb clamping force at A; and (b) the torque required to loosen the clamp.
The square-threaded screw 0f the C-clamp has a mean diameter of 8 mm and a pitch of 1.6 mm. The coefficient of static friction between the threads is 0.2. If the torque C=1.50Nm is used to tighten the clamp, determine (a) the clamping force; and (b) the torque required to loosen the clamp.
The square-threaded screw with a pitch of 10 mm and a mean radius of 18 mm drives a gear that has a mean radius of 75 mm. The static and kinetic coefficients of friction between the gear and the screw are 0.12 and 0.06, respectively. The input torque applied to the screw is C0=10Nm. Assuming constant speed operation, determine the output torque C1 acting on the gear.
The coeffient of static friction between the uniform bar AB of weight W and the ground is 0.45. Find the smallest angle and the corresponding force P that would initiate simultaneous tipping and sliding of the bar.
The screw of the carjack has a pitch of 0.1 in. and a mean radius of 0.175 in. Note that the ends of the screw are threaded in opposite directions (right- and left-handed threads). The coefficient of static friction between the threads is 0.08. Calculate the torque C0 that must be applied to the screw in order to start the 1200-1b load moving (a) upward; and (b) downward.
In (Figure 1), the man has a mass of 75 kg and the crate has a mass of 130 kg. The coefficient of static friction between his shoes and the ground is μs = 0.4 and between the crate and the ground is μc = 0.3.
The two wedges are stacked as shown in figure 1. a.) What is the total reaction at the wall if the coefficient of friction between AB is 0.1 b.) The coefficient of friction between AC and BD is 0.2. c.) How many contact surfaces in the Figure? d.) What is the angle of friction at AC in the figure?
The drum shown in the figure below has a weight of 100 N and rests on the floor for which the coefficient of static friction is 0.6. Assume tipping and determine the smallest value of P required for impending motion in N Assume sliding and determine the smallest value of P required for impending motion in N.
A pulley with a diameter of 4 in. can rotate about a fixed shaft with a diameter of 2 in. The coefficient of static friction between the pulley and shaft is 0.20. Determine; a. the smallest vertical force P required to start raising a 500-lb load. b. thesmallest vertical force P required to hold the load. c. the smallest horizontal force P required to start raising the same load.
A ladder of length 5 m is resting against a smooth wall, its point of contact being just below a first floor window. The bottom of the ladder rests on the ground and the coefficient of friction between the ladder and the ground is 0.3. A person of mass 75 kg climbs the ladder, which has a mass of 4 kg. The bottom of the ladder is at the point of slipping, outward from the wall, just as the person reaches the mid-point of the ladder’s length. Draw a free body diagram of the ladder and calculate the maximum frictional force opposing the slipping motion. In addition, determine the angle of inclination (θ) of the ladder, when the person is at the mid-point and the ladder is on the verge of slipping.
1. A triple-thread Acme-form power screw of 50 mm major diameter is used. The nut makes 1.5 turn per cm of axial travel. A force of 600 N is applied at the end of a 850 mm wrench used on the nut. The mean diameter of the collar is 90 mm. If the coefficient of friction at the thread and at the collar are 0.15 and 0.13, respectively. Determine the weight that is being lifted.
One end of a uniform meter stick is placed against a vertical wall. The other end is held by a lightweight cord that makes an angle ? with the stick. The coefficient of static friction between the end of the meter stick and the wall is us =0.40. B. A block of the same weight as the meter stick is suspended from the stick, as shown, at a distance x from the wall. Assume that angle ? = 15° in this problem. What is the minimum value of x for which the stick will remain in equilibrium? C. When angle ? = 15°, how large must the coefficient of static friction be so that the block can be attached 0.10 m from the left end of the stick without causing it to slip?