A 4.0 m long board with uniform density has mass 75 kilograms and is laid horizontally atop 2 support beams. A 50 kg person is walking to the right on the board.a. Determine the force that the left support beam exerts on the board when the person is 2.5 m from the left end of the board. i. What point will you use it as your pivot point to use torques to answer this question? Explain why this is a good choice of a pivot point that allows you to just use torques to determine this force.ii. Calculate the force.b. Determine the farthest point on the board that the person can walk before the board loses contact with the left support beam. (Hint: what does it mean if the support force is negative? Is this physically possible?)c. Determine the maximum mass of the person such that the person can reach the end of the board without the board losing contact with the left support beam causing the board to flip off its support. 3. A 4.0 m long board with uniform density has mass 75kilograms and is laid horizontally atop 2 supportbeams. A 50 kg person is walking to the right on theboard.a. Determine the force that the left support beamexerts on the board when the person is 2.5 m fromthe left end of the board.0.25 mii. Calculate the force.2.0 mi. What point will you use it as your pivot point to use torques to answer this question? Explain why thisis a good choice of a pivot point that allows you to just use torques to determine this force.b. Determine the farthest point on the board that the person can walk before the board loses contactwith the left support beam. (Hint: what does it mean if the support force is negative? Is thisphysically possible?)c. Determine the maximum mass of the person such that the person can reach the end of the boardwithout the board losing contact with the left support beam causing the board to flip off its support.

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Answered: A 4.0 m long board with uniform density…

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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A 4.0 m long board with uniform density has mass 75 kilograms and is laid horizontally atop 2 support beams. A 50 kg person is walking to the right on the board.

a. Determine the force that the left support beam exerts on the board when the person is 2.5 m from the left end of the board.

i. What point will you use it as your pivot point to use torques to answer this question? Explain why this is a good choice of a pivot point that allows you to just use torques to determine this force.

ii. Calculate the force.

b. Determine the farthest point on the board that the person can walk before the board loses contact with the left support beam. (Hint: what does it mean if the support force is negative? Is this physically possible?)

c. Determine the maximum mass of the person such that the person can reach the end of the board without the board losing contact with the left support beam causing the board to flip off its support.

3. A 4.0 m long board with uniform density has mass 75
kilograms and is laid horizontally atop 2 support
beams. A 50 kg person is walking to the right on the
board.
a. Determine the force that the left support beam
exerts on the board when the person is 2.5 m from
the left end of the board.
0.25 m
ii. Calculate the force.
2.0 m
i. What point will you use it as your pivot point to use torques to answer this question? Explain why this
is a good choice of a pivot point that allows you to just use torques to determine this force.
b. Determine the farthest point on the board that the person can walk before the board loses contact
with the left support beam. (Hint: what does it mean if the support force is negative? Is this
physically possible?)
c. Determine the maximum mass of the person such that the person can reach the end of the board
without the board losing contact with the left support beam causing the board to flip off its support.

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