**Problem Description:**The scaffold \( S \) is raised by moving the roller at point \( A \) toward the pin at point \( B \). If \( A \) is approaching \( B \) with a speed of 1.5 ft/s, determine the speed at which the platform rises at the instant \( \theta = 60^\circ \). The 4-ft links are pin connected at their midpoint.*(Use Absolute Motion to solve)***Diagram Explanation:**The diagram shows a scissor lift mechanism where:- The scaffold platform \( S \) is at the top.- Two diagonal links, labeled \( D \) and \( E \), form an 'X' shape with each having a length of 4 ft.- The roller at point \( A \) moves horizontally toward point \( B \).- The angle \( \theta \) at the current configuration is \( 60^\circ \).**Given Data:**- Speed of \( A \) towards \( B \): 1.5 ft/s- Angle \( \theta \): 60 degrees- Length of links \( D \) and \( E \): 4 ft each**Objective:**Determine the vertical speed at which the scaffold platform \( S \) rises using absolute motion principles.

Answered: Image /qna-images/answer/c63d347a-633b-4618-b377-b0cc9d931cf6.jpg

The scaffold S is raised by moving the roller at A toward the pin at B. If A is approaching B with a speed of 1.5 ft/s, determine the speed at which the platform rises at instant 8 = 60°. The 4-ft links are pin connected at their midpoint. (Use Absolute Motion to solve) 1.5 ft/s D4 ft E B

The scaffold S is raised by moving the roller at A toward the pin at B. If A is approaching B with a speed of 1.5 ft/s, determine the speed at which the platform rises at instant 8 = 60°. The 4-ft links are pin connected at their midpoint. (Use Absolute Motion to solve) 1.5 ft/s D4 ft E B

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

See similar textbooks

Similar questions

B3
Y = 6 m/s 40° funt JMK = 0.35 = TBD block: m= 5 kg Spring: k = 100 N/m Value L = won't be needed A black is positioned. on a 40° slope as shown, and a spring is attached to it as shown. The spring is relaxed (unstretched) in the position shown. The block is given an initial velocity V₁ = 6 m/s downslope. Find the distance "d" that the block will slide before it comes to a stop. Use the Principle of Work and Energy.
Thex-and y-motions of guides A and Bwith right-angle slots control the curvilinear mation of the connecting pin P. which slides in bath slots. For a short interval, the motions are governed byx- 19+0.47 and y - 19 - 0.90P. wherexand y are in millimeters and tis in seconds. Calculate the magnitudes of the velocity v and acceleration a of the pin for t-23s. Sketch the direction of the path and indicate its curvature for this instant. Calculate the x- and y-components of the acceleration. Answers: mm/s? 0.94 a,- -12.42 mm/s? Calculate the x- and y-components of the velocity. Answers: 2.162 mm/s Vy" -14.283 mm/s
In traveling a distance of 3.9 km between points A and D, a car is driven at 93 km/h from A to B for t seconds and 51 km/h from C to D also for t seconds. If the brakes are applied for 6.0 seconds between B and C to give the car a uniform deceleration, calculate t and the distances between A and B. Answers: t= S= 93 km/h i i B C 3.9 km 51 km/h S km
The x- and y-motions of guides A and B with right-angle slots control the curvilinear motion of the connecting pin P, which slides in both slots. For a short interval, the motions are governed by x = 12 +0.55t² and y= 16-0.57t3, where x and y are in millimeters and t is in seconds. Calculate the magnitudes of the velocity v and acceleration a of the pin for t = 2.5 s. Sketch the direction of the path and indicate its curvature for this instant. B P A| x
ı need answer and solution way please
Car A is traveling at the constant speed of 45 km/h as it rounds the circular curve of radius r = 380 m and at the instant represented is at the position 0 = 40°. Car B is traveling at the constant speed of 54 km/h and passes the center of the circle at this same instant. Car A is located with respect to car B by polar coordinates r and with the pole moving with B. For this instant determine VA/B and the values of r and as measured by an observer in car B. Answers: VA/B = r = 0 = i i 8 m/s m/s rad/s B
The 13.3-in. spring is compressed to a 6.9-in. length, where it is released from rest and accelerates the sliding block A. The acceleration has an initial value of 280 ft/sec² and then decreases linearly with the x-movement of the block, reaching zero when the spring regains its original 13.3-in. length. Calculate the time t for the block to go (a) 3.2 in. and (b) 6.4 in. -6.9" -13.3" Answers: To go 3.2 in., t= To go 6.4 in., t = i sec sec
Under the action of force P, the constant acceleration of block B is 6.2 ft/sec² up the incline. For the instant when the velocity of B is 3.1 ft/sec up the incline, determine the velocity of B relative to A (positive if up the slope, negative if down), the acceleration of B relative to A (positive if up the slope, negative if down), and the absolute velocity of point C (positive if up the slope, negative if down) of the cable. B 25° Answers: VB/A = AB/A = Vc = i i ft/sec ft/sec² ft/sec
2/154 The hydraulic cylinder gives pin A a constant veloc- ity v = 2 m/s along its axis for an interval of mo- tion and, in turn, causes the slotted arm to rotate about O. Determine the values of r, r, and ô for 30°. (Hint: Recognize that all acceleration components are zero when the velocity the instant when 0 = is constant.) A 30° 300 mm Problem 2/154
Current Attempt in Progress The speed of a car increases uniformly with time from 63 km/h at A to 103 km/h at B during 8 seconds. The radius of curvature of the hump at A is 60 m. If the magnitude of the total acceleration of the mass center of the car is the same at B as at A, compute the radius of curvature pg of the dip in the road at B. The mass center of the car is 0.74 m from the road. Assume PA = 60 m, h = 0.74 m. Answer:PB = m B PB
2/42 Packages enter the 3-m chute at A with a speed of 1.2 m/s and have a 0.3g acceleration from A to B. If the packages come to rest at C, calculate the constant acceleration a of the packages from B to C. Also find the time required for the packages to go from A to C. A -3 m B Problem 2/42 3.6 m C