Q.5) A crank mechanism is supported by a spring and bearings B and C. Bearing B does not exert any axial force. Bearing C exerts an axial force (force along the shaft) preventing the mechanism from sliding along axis BC. The spring is currently stretched 50 mm in the position shown and is aligned parallel to the y-axis. Note: bearings B and C are positioned along the x-axis and properly aligned so they do NOT exert any reaction moments on the mechanism. (a) Calculate the minimum force P required to initiate rotation about the hinge axis BC causing point D to lift off the block. Compute the reaction forces at B and C in this scenario. (b) If half the force found in part (a) is applied to the handle instead, determine the normal reaction force at point D.

Q.5) A crank mechanism is supported by a spring and bearings B and C. Bearing B does not exert any axial force. Bearing C exerts an axial force (force along the shaft) preventing the mechanism from sliding along axis BC. The spring is currently stretched 50 mm in the position shown and is aligned parallel to the y-axis. Note: bearings B and C are positioned along the x-axis and properly aligned so they do NOT exert any reaction moments on the mechanism. (a) Calculate the minimum force P required to initiate rotation about the hinge axis BC causing point D to lift off the block. Compute the reaction forces at B and C in this scenario. (b) If half the force found in part (a) is applied to the handle instead, determine the normal reaction force at point D.

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

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Concept explainers

Axial Load

When a bar of the uniform cross-section is acted by a load, such that the load acts along the longitudinal axis of the bar, such kinds of loadings are known as axial loadings. In general terms, a load is an external force acting on a component. An axial load acts perpendicular to the geometric cross-section of the component. Based on the direction of the application of the load, an axial load can be tensile or compressive. The analysis of bodies under the action of axial loads is generally studied under the branch of mechanics, known as statics.

Question

Q.5) A crank mechanism is supported by a spring and bearings B and C. Bearing B does not exert
any axial force. Bearing C exerts an axial force (force along the shaft) preventing the mechanism
from sliding along axis BC. The spring is currently stretched 50 mm in the position shown and is
aligned parallel to the y-axis. Note: bearings B and Care positioned along the x-axis and properly
aligned so they do NOT exert any reaction moments on the mechanism.
(a) Calculate the minimum force P required to initiate rotation about the hinge axis BC causing
point D to lift off the block. Compute the reaction forces at B and C in this scenario.
(b) If half the force found in part (a) is applied to the handle instead, determine the normal reaction
force at point D.
k = 1000 N/m
55
mm
z 165
mm
B
135
mm
135
mm
55
mm
40 mm
45 mm
45 mm
90
mm

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