35P.) Figure 8-42 shows a pendulum of length L. Its bob (whicheffectively has all the mass) has speed v, when the cord makes anangle 6, with the vertical. (a) Derive an expression for the speedof the bob when it is in its lowest position. What is the least valuethat v, can have if the pendulum is to swing down and then up (b)to a horizontal position, und (c) to a vertical position with the cordremaining straight?LFIGURE 8-42 Problem 35.

Answered: Image /qna-images/answer/56174137-0487-4646-a679-f982ed93dd9f.jpg

Answered: 35P.) Figure 8-42 shows a pendulum of…

Elementary Geometry For College Students, 7e

7th Edition

ISBN:9781337614085

Author:Alexander, Daniel C.; Koeberlein, Geralyn M.

Publisher:Alexander, Daniel C.; Koeberlein, Geralyn M.

ChapterP: Preliminary Concepts

SectionP.CT: Test

Problem 1CT

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Two construction workers are lifting a beam using ropes. Worker A pulls with a force of 500 newtons at an angle of 40°with the positive x-axis. Worker B is on the opposite side pulling with a force of 380 newtons at an angle of 115 ° with the positive x- axis. Find the (a) magnitude and (b) direction angle of the resultant force. (Round to the nearest hundredths)
The beam shown below is loaded with a group of parallel forces. Calculate the resultant and locate with respect to the left support and also the center of the beam. Note: There are 2 parts to this problem and each part should be worked independently (sketches, equations and calculations must be shown for each part). Part 1: Find the resultant with respect to the left support. The illustration below can be used to solve for the sum of moments about the left support. Part 2: Draw a new sketch showing the beam again with the 3 vertical forces going down. On this second sketch, the centerline of the beam should be drawn. Next, the dimensions should depict the distances from each of the 3 downward forces to the centerline of the beam.
A block-and-tackle pulley hoist is suspended in a warehouse by ropes of lengths 2 m and 3 m. The hoist weighs 430 N. The ropes, fastened at different heights, make angles of 50° and 38° with the horizontal. Find the tension in each rope and the magnitude of each tension. (Let T2 and T3, represent the tension vectors corresponding to the ropes of length 2 m and 3 m respectively. Round all numerical values to two decimal places.) T2 = |T2| = 339.0511648 N T3 = |T3| = 276.5671494
A block-and-tackle pulley hoist is suspended in a warehouse by ropes of lengths 2 m and 3 m. The hoist weighs 430 N. The ropes, fastened at different heights, make angles of 50° and 38° with the horizontal. Find the tension in each rope and the magnitude of each tension (in N). (Let T, and T3, represent the tension vectors corresponding to the ropes of length 2 m and 3 m respectively. Round all numerical values to two decimal places.) 38° 50° 3 m 2 m T2 X N |T2l X N T3 X N = |T3| = X N

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