can any one solve Q 2 part e, f and gplxzz In the diagram on the right, a plank weighing 120 N is supported bytwo trestles at points A and B. A man weighing 480 N is standing onK-1 m1 m2 mthe 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 ofmassof planec Use the principle of moments to calculate the upward force fromweightweightBthe trestle at B.of manof plank= 480 N 12Gi20 Nd 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 momenthe sums of the clockwise and anticlockwise moments still equal?

For equilibrium of plank ∑Fx=0∑Fy=0And ∑τ=0

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?

University Physics Volume 1

18th Edition

ISBN:9781938168277

Author:William Moebs, Samuel J. Ling, Jeff Sanny

Publisher:William Moebs, Samuel J. Ling, Jeff Sanny

Chapter6: Applications Of Newton's Laws

Section: Chapter Questions

Problem 82P: To maintain a constant speed, the force provided by a car’s engine must equal the drag force plus...

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