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In the diagram on the right, a plank weighing 120 N is supported by two trestles at points A and B. A man weighing 480 N is standing on the plank. a Redraw the diagram, showing all the forces acting on the plank. b Calculate the total clockwise moment of the two weights about A. K-1 m 1 m -2 m centre of mass of plane c Use the principle of moments to calculate the upward force from weight weight of plank of man = 480 N 12G120N A B the trestle at B. d What is the total downward force on the trestles? e What is the upward force from the trestle at A? f The man now walks past A towards the left-hand end of the plank. What is the upward force from the trestle at B at the instant the plank starts to tip? g How far is the man from A as the plank tips? the nrinciple of moments on the opposite page, moments were taken about X. Calculate the momer ums of the clockwise and anticlockwise moments still equal?

In the diagram on the right, a plank weighing 120 N is supported by two trestles at points A and B. A man weighing 480 N is standing on the plank. a Redraw the diagram, showing all the forces acting on the plank. b Calculate the total clockwise moment of the two weights about A. K-1 m 1 m -2 m centre of mass of plane c Use the principle of moments to calculate the upward force from weight weight of plank of man = 480 N 12G120N A B the trestle at B. d What is the total downward force on the trestles? e What is the upward force from the trestle at A? f The man now walks past A towards the left-hand end of the plank. What is the upward force from the trestle at B at the instant the plank starts to tip? g How far is the man from A as the plank tips? the nrinciple of moments on the opposite page, moments were taken about X. Calculate the momer ums of the clockwise and anticlockwise moments still equal?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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can any one solve Q 2 part e, f and g plxzz
In the diagram on the right, a plank weighing 120 N is supported by two trestles at points A and B. A man weighing 480 N is standing on K-1 m 1 m 2 m the plank. a Redraw the diagram, showing all the forces acting on the plank. b Calculate the total clockwise moment of the two weights about A. centre of mass of plane c Use the principle of moments to calculate the upward force from weight weight B the trestle at B. of man of plank = 480 N 12Gi20 N d What is the total downward force on the trestles? e What is the upward force from the trestle at A? f The man now walks past A towards the left-hand end of the plank. What is the upward force from the trestle at B at the instant the plank starts to tip? g How far is the man from A as the plank tips? ting the principle of moments on the opposite page, moments were taken about X. Calculate the momen the sums of the clockwise and anticlockwise moments still equal?
Transcribed Image Text:In the diagram on the right, a plank weighing 120 N is supported by two trestles at points A and B. A man weighing 480 N is standing on K-1 m 1 m 2 m the plank. a Redraw the diagram, showing all the forces acting on the plank. b Calculate the total clockwise moment of the two weights about A. centre of mass of plane c Use the principle of moments to calculate the upward force from weight weight B the trestle at B. of man of plank = 480 N 12Gi20 N d What is the total downward force on the trestles? e What is the upward force from the trestle at A? f The man now walks past A towards the left-hand end of the plank. What is the upward force from the trestle at B at the instant the plank starts to tip? g How far is the man from A as the plank tips? ting the principle of moments on the opposite page, moments were taken about X. Calculate the momen the sums of the clockwise and anticlockwise moments still equal?
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