3. he box is stationary on the inclined surface. The coefficient of static friction between the box and the surface is µs. (a)lf the mass of the box is 10 kg, a = 20°, ß = 30°, and µs = %3D 0.24, what force T is necessary to start the box sliding up the surface? (b)Show that the force T necessary to start the box sliding up the surface is a minimum when tan B = µs.

3. he box is stationary on the inclined surface. The coefficient of static friction between the box and the surface is µs. (a)lf the mass of the box is 10 kg, a = 20°, ß = 30°, and µs = %3D 0.24, what force T is necessary to start the box sliding up the surface? (b)Show that the force T necessary to start the box sliding up the surface is a minimum when tan B = µs.

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

Section: Chapter Questions

Problem 1P

See similar textbooks

Similar questions

THE COEFFICIENT OF STATIC FRICTION BETWEEN THE BLOCK AND THE PLANE IS µs = 0.2. DETERMINE THE MAXIMUM VALUE OF WEIGHT W WITHOUT CAUSING THE 50-LB BLOCK TO SLIP. D W 45° Answer:
Question Bank - Friction The two homogeneous bars AB and BC are connected with a pin at B and placed between rough vertical walls. If the coefficient of static friction between each bar and the wall is 0.4, determine the largest angle 0 for which the assembly will remain at rest. 600 mm 6N 600 mm 8 N A. Technology Druen by fanoation Tips: 6N force and 8N force are acting vertically by gravity at the center of the material. Expose the forces acting between the bars and the wall (F and N) Check which interaction will first impend sliding - then expose if free body diagram from the internal hinge at B. e =? Answer in ° (1-2 Decimals are accepted)
A solid steel shaft is transmitting 250hp at 1500 rpm a.) what should be its diameter if the deflection is not to exceed 1° for a length of 6 ft b.) what would be its ultimate stress if the factor of safety is 6? c.) if the shaft is hollow determine the dimensions of outside and inside diameters if (D=2d). d.) Compute the torsional deflection of the hollow shaft and determine which shaft is more rigid?
An 8-m simply supported beam carries a concentrated load of 40 kN at a distance of 3.25 m from the left support. Calculate the deflection (mm) at the point of maximum moment. The flexural rigidity EL.is equal to 10000 kN-m². Enter a positive value. Just indicate the direction of the deflection in your solution.
Solve the angle of twist on a solid shaft, with Scm radius and 50cm length, if the torque applied is 2MN-mm. The modulus of rigidity is 50000MPA. O 0.204rad O 0.0204rad O 0.00204rad O 0.000204rad
The wheel weighs 48 lb and rests on a surface for which ?B = 0.2. A cord wrapped around it is attached to the top of the 72-lb homogeneous block. (Figure 1). If the coefficient of static friction at Dis ?D= 0.3, determine the smallest vertical force that can be applied tangentially to the wheel which will cause motion to impend. P A 1.5 ft B -1.5 ft-- C D 3 ft
Question Bank - Friction The 40-N spool is suspended from the hanger GA and rests against a vertical wall. The center of gravity of the spool is at G and the weight of the hanger is negligible. The wire wound around the hub of the spool is extracted by pulling its end with the force P. If the coefficient of static friction between the spool and the wall is 0.25, determine the smallest P that will extract the 130 270 mm 192 mm wire.
A flat steel plate is of trapezoidal form and uniform thickness of 10mm. The plate tapers uniformly from a width of 150mm to 100 mm over a length of 500mm. Determine the elongation of the plate under an axial pull of 100 KN. Take E= 200 KN/mm² B₁ 100 KN I -x-8x 100 mm 500 mm- 150 mm B₂ 100KN
QUESTION 6 The 6kg block is confined to move along the smooth parabolic path. The attached spring restricts the motion and, due to the roller guide, always remains horizontal as the block descends. The spring has a stiffness of k = 10N/m and an un-stretched length of 0.5m. a. Draw a free body diagram for the block. y = 2 - 0.5 x? www k = 10 N/m В 14 b. Write the general form of the equation of motion in the direction normal to the surface. c. Write the general form of the equation of motion in the direction tangential to the surface. --
The 11-lb block has a velocity of 3.83 ft/s when the force of F= (257.6t) Ib-ft/sec2 is applied. Determine the acceleration of the block whent= 2.08 s. The coefficient of kinetic friction at the surface is u 0.21. Answer is in ft/sec. F = (257.6P) Ib ft/sec? ty
Problem I A 2.25-kg slender rod AB and a 1.85-kg slender rod BC are connected by a pin at B and by the cord AC. The assembly designed by engineers can rotate in a vertical plane under the combined effect of gravity and a couple M applied to rod BC. Knowing that in the position shown, the 300 mm angular velocity of the assembly is zero and the tension in cord AC is equal to 25.0 N, determine; A (a) the angular acceleration of the assembly (b) the magnitude of the couple, M 400 mm C 400 mm AM B
Two blocks are connected by a light, flexible cable that passes a frictionless pulley. Block A weighs 500N and block B weighs 200N. The coefficient of static friction between A and the ramp is 0.30. Determine: (a) If the motion is impending down the plane, what is the tension force in the cable connecting Block A and Block B. (b) Are the two block in equilibrium state? 3 dec places pls