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Author Question: A stepladder consists of two halves that are hinged at the top and connected by a tie rod which ... (Read 689 times)

casperchen82

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on: Oct 11, 2019

Question 1

In the figure, a uniform ladder of weight 200 N and length 10 m leans against a perfectly smooth wall. A firefighter of weight 600 N climbs a distance x up the ladder. The coefficient of static friction between the ladder and the floor is 0.50. What is the maximum value of x for which the ladder will not slip?



◦ 3.9 m
◦ 8.4 m
◦ 5.0 m
◦ 6.0 m
◦ 6.3 m

Question 2

A stepladder consists of two halves that are hinged at the top and connected by a tie rod which keeps the two halves from spreading apart. In this particular instance, the two halves are 2.5 m long, the tie rod is connected to the center of each half and is 70 cm long. An 800-N person stands 3/5 of the way up the stepladder, as shown in the figure. The ladder is light enough that we can neglect its weight, and it rests on an extremely smooth floor. What is the tension in the tie rod? (Note: To solve this problem, it is helpful to imagine cutting the ladder in half vertically and consider the forces and torques acting on each half of the ladder.)



◦ 360 N
◦ 140 N
◦ 240 N
◦ 280 N
◦ 560 N
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Marked as best answer by casperchen82 on Oct 11, 2019

enass

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Reply #1 on: Oct 11, 2019
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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casperchen82

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Reply #2 on: Oct 11, 2019
Thank you!


enass

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Reply #3 on: Oct 11, 2019
Always glad to help...


Martin Nachsin

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Reply #4 on: Oct 13, 2020
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Reply #5 on: May 26, 2021
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