A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.0 m/s?. (a) If the tension in the cord is 61 N, what is the lamp's mass? (b) What is the cord's tension when the elevator ascends with an upward acceleration of 2.0 m/s?? (a) Number Units (b) Number i Units

A lamp hangs vertically from a cord in a descending elevator that decelerates at 2.0 m/s?. (a) If the tension in the cord is 61 N, what is the lamp's mass? (b) What is the cord's tension when the elevator ascends with an upward acceleration of 2.0 m/s?? (a) Number Units (b) Number i Units

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

F2 = 5 kN F = 8 kN 45 60° F What should be the value of F3 and F4 in kN so that the system is in equilibrium? F3 F4
Situation 22: The 125-kg concrete block A is released from rest in the position shown and pulls the 200 kg log up the 30" ramp. If the coefficient of kinetic friction between the log and the ramp is 0.5, compute the following: Sit kp rac fri ca Si 200 kg u HA3D0.5 T 125 kg 6m 30° 1 2 1. acceleration of block A as it hits the ground 2. tension in the cable supporting block A 3. velocity when block A hits the ground
The uniform 110-lb beam is initially at rest when the forces are applied to the cables. Set FA = 130 lb and FB = 220 lb. (Figure 1) Part A Determine the magnitude of the acceleration of the mass center at this instant. Express your answer to three significant figures and include the appropriate units. Figure FA 12 ft FB B \60° 1 of 1 HÅ ? AG = Value Units Submit Request Answer Part B Determine the angular acceleration of the beam at this instant. Express your answer to three significant figures and include the appropriate units. HÅ ? a= Value Units Submit Request Answer Provide Feedback
Q8) You are designing a system for moving aluminum cylinders from the ground to a loading dock. You use a sturdy wooden ramp that is 2.00 m long and inclined at 37.0 degrees above the horizontal. Each cylinder is fitted with a light, frictionless yoke through its center, and a light (but strong) rope is attached to the yoke. Each cylinder is uniform and has mass 420 kg and radius 0.300 m. The cylinders are pulled up the ramp by applying a constant force F to the free end of the rope. F* is parallel to the surface of the ramp and exerts no torque on the cylinder. The coefficient of static friction between the ramp surface and the cylinder is 0.120. a) What is the largest magnitude F° can have so that the cylinder still rolls without slipping as it moves up the ramp? b) If the cylinder starts from rest at the bottom of the ramp and rolls without slipping as it moves up the ramp, what is the shortest time it can take the cylinder to reach the top of the ramp?
Question 39 A 0.145-kg baseball pitched horizontally at 27.0 m/s strikes a bat. If the contact time between bat and ball is 2.5 ms, calculate the net force (N) acting on the ball. OA 156.6 O B. 15.66 OC. 1566 O D. 1.566 O E. None of the above
4G. 40 6:51 10 ... 94 Quizzes A transmission tower shown below is subjected to lateral loads as shown. A =3.7 kN, B =4.6 kN, C =6.4 kN Determine the magnitude of the axial force in member EG (in kN). Answer in two decimal places. Numerical values only. Don't indicate units here, just on the submitted solution. A-KN 1.5 m K 1.8 m B-KN 1.8 m C-KN F 1.8 m 2.55 m 2.55 m II
A uniform 10-kg bar OA is suspended from the pin at O. The bar is at rest when the 1.5 kg bal B with negligible diameter hits end A with a velocity of VB1-30 m/s. After the impact, the ball bounces off following the direction shown. 0 A VB2 1. What is the angular velocity of rod OA just after impact? 2. What is the coefficient of restitution between ball B and rod OA? B VB1 24 1.8 m
Question In a Porter governor, each of the four arms is 400 mm long. The upper arms are pivoted on the axis of 400 the sleeve whereas the lower arms are attached to the 1 sleeve at distance of 45 mm from the axis of A. rotation. Each ball has a mass of 8 kg and the load on the sleeve is 60 kg. What will be the equilibrium speeds for the two extreme radii of 250 mm and 300 400 mg mm of rotation of the governor balls? 45 i B 60/2 kg
The 4 kg ball is thrown at the suspended 0.35 kN block with a velocity of 5 m/s. If the impact is perfectly elastic, what is the value of height "h" to which the block will swing before it comes to rest? 5 m/s B. A
A bungee jumper who weighs 200lb jumps from a bridge 130ft above a river. The bun gee cord has an unstretched length of 60ft and has a spring constant of 14 lb/ft How high above the river is the Jumper when the cord brings him to a stop? (2 decimal place) What maximum force does the cord exert on him? (Round off) What is the maximum velocity does the Jumper reach? (2 decimal places)
The double pulley consists of two wheels (one of radius 75 mm and the other of radius 200 mm) which are attached to one another and turn at the same rate. The pulley has a mass of 20 kg and a radius of gyration of k = 120 mm. Calculate the mass moment of inertia of the double pulley. -200 mm 75 mm C A B Oa.1=0.182 kgm² Ob.1-0.0144 kgm² O c. 1=0.288 kgm² O d.1=1.65 kgm²
3- Draw the graphs of the axial forces, shear forces and bending moments for the beam shown in the figure below, then choose the appropriate value for the following: 20 KN A bending torque 3m The reaction in the predicate A Axial force at point B Shear strength in the middle of the sill 20 KN B 141.4 O O O 3m 16 KN/m с 215.6 O O O O 5m D 20 O O 32.7 O O O 12.7 O O