The force Pis applied to the 52-kg block when it is at rest. Determine the magnitude and direction of the friction force exerted by the surface on the block if (a) P = 0, (b) P = 165 N, and (c) P = 265 N. (d) What value of P is required to initiate motion up the incline? The static and kinetic coefficients of friction between the block and the incline are u, = 0.20 and Hk = 0.15, respectively. The friction force is positive if up the incline, negative if down the incline. 52 kg 19° H,=0.20 H = 0.15 13 Answers: (a) F= -115 (b) F= 41.3 N (c) F= i 136 N (d) P= i 44.9 N

The force Pis applied to the 52-kg block when it is at rest. Determine the magnitude and direction of the friction force exerted by the surface on the block if (a) P = 0, (b) P = 165 N, and (c) P = 265 N. (d) What value of P is required to initiate motion up the incline? The static and kinetic coefficients of friction between the block and the incline are u, = 0.20 and Hk = 0.15, respectively. The friction force is positive if up the incline, negative if down the incline. 52 kg 19° H,=0.20 H = 0.15 13 Answers: (a) F= -115 (b) F= 41.3 N (c) F= i 136 N (d) P= i 44.9 N

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 47-kg crate is stationary when the force Pis applied. Determine the resulting acceleration of the crate if (a) P = 0, (b) P = 205 N, and (c) P = 477 N. The acceleration is positive if up the slope, negative if down the slope. SH, = 0.39 Hx = 0.29 47 kg P 25° Part (a). P = 0. Since the force F needed to keep the crate from moving is larger than the maximum friction force Fmax that is available, we know that the crate does move. Solve for the acceleration of the block. We will assume that the acceleration is positive if it moves up the slope. mg N Answer: a- m/s2
Calculate the Bending Stress using the equation ?? = ?.?max /? , where M is the Bending Moment for each of your two beams. Also calculate the longitudinal shear ? = ?.? /?.? for each beam. Compare and discuss the results for 3 point load and 4 point load. Draw Bending moment diagram and shear force diagram for each test.
4. A 25 mm diameter shaft is pulled through a cylindrical bearing as shown (not rotating). Oil is used as a lubricant and fills the 0.3 mm gap between the shaft and the bearing. The kinematic viscosity of the oil is 8.0 x 10-4 m²/s and the specific gravity is 0.91. Determine the force P required to pull the shaft at a velocity of 3 m/s. Assume the velocity distribution in the gap is linear (i.e. Couette flow). Draw the free body diagram and show the forces. Bearing Shaft 0.5 m- Lubricant
Q1/ Determine the resulting displacement of pin B. Assume: A1=A2= 900 mm? , E1=E2= 100 GPa, a1=a2= 12x10 /°C, AT= -25 °C , h= 1700 mm, 0 = 65° (1) (2) Q2/ Determine the magnitude of applied load P. Assume: A1 = 500 mm?, E1 = 70 GPa, a1= 22x10/°C, AT= -30 °C, E = 1150 x 106 mm/mm, h = 3.75 m, a 1.75 m,b 1.25 m D (1) B
The cross section of a quarter circular concrete block JKL as shown in Figure 5 is located at thebottom of a reservoir. The width (perpendicular to the paper) is 3 m. The specific weight of theconcrete block is 24 kN/m3. The coefficient of friction between the base of the block and thefoundation is 0.43. Determine if the concrete block is stable or not against sliding and overturningif the water is:A. At side XB. At side Y, with the same water level as A.
Show complete solution pls
Problem 2: A solid circular shaft is acted upon by the torques as shown. If G= 12, 000 ksi determine: a. Rotation of wheel D with respect to A. b. Shear stress at point E Diameter of shaft: A-B = 2in C-D = 2in B-C = 4in T1=3 m in.kips T2=7 m in.kips Ta= 8.5 Tm in.kips T4= 4.5 m in.kips T1 T2
For the given load state, find it using the method of integrating the elastic curve of point C and the slope of the given load state.
Kindly answer correctly. Please show the necessary steps. Thanks in advance.
The block A and the wedge B weighs 100 kN and 40 kN, respectively. The coefficient of fritction for all contacting surfaces is µ = 0.268. Determine the following: a. What value of P in kN would be required to push to the right the wedge under the block? b. What value of P in kN would be required to pull to the left the wedge under the block? Assume the block A is stll in contact with the wall just as motion starts.
Determine the location and magnitude of the maximum absolute deflection in AB between A and the center of the beam. (b) Assuming that beam AB is a W460 *113 rolled shape, M0 = 224 kN·m, and E = 200 GPa, determine the maximum allowable length L so that the maximum deflection does not exceed 1.2 mm.
1. A typical cross-section of a roinforced concrete T-beam is shown in the figure below. The beam is reinforced with eight 25 mm diameter bars in tension zone. For the purpose of analysis, use the effoctive depth of 575 mm. Use f. = 25 MPa and f, = 420 MPa. Determine øM, 1000 mm T100 mm 8-D25 300 mm 575 mm ww G29