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Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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
Transcribed Image Text:Question: A rope with two mass-less platforms at its two ends passes over a fixed pulley, as shown
in the figure. Discs with narrow slots and an equal weight of 20 N each can be placed on the
platforms. The number of discs placed on the left-side platform is n, and that on the right-side
platform is m. It is found that for n = 5 and m = 0, a force F= 200 N (refer to part (i) of the figure) is
sufficient to initiate upward movement of the left side platform. If the force F is removed, Find the
minimum value of m (refer to part (ii) of the figure) required to prevent the downward motion of
the left side platform. (in integer).
n disc
Fixed pulley
Mass-less platforms
n disc
Fixed pulley
m disc
Mass-less platforms
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- In the figure below, a weight W is suspended from point D of a beam AD. The beam is held up by rod BC. Neglect the mass of the beam AD and rod BC. Which of the following is true (select all that apply). Beam AD is a three force member The direction of the force in rod BC (i.e whether the force is tension or compression) is known Beam AD is a two-force member Rod BC is a two-force member 4m 4m The line of action of the force in rod BC is known The magnitude of the force in rod BC is known 3m B D Warrow_forward6.63 The principles of a differential chain block are indicated schematically in the figure. Determine the magnitude of force P needed to support the 800-N force. Also, find the distance x where the cable must be attached to bar AB so the bar remains horizontal. All pulleys have a radius of 60 mm.arrow_forwardTwo blocks of mass Mi and M2 are connected by a massless string that passes over a massless pulley as shown in the figure. M, has a mass of 8.25 kg and rests on an incline of 0, = 59.5. M, rests on an incline of 02 = 23.5. %3D M2 Find the mass of block M2 so that the system is in M. equilibrium (i.e., not accelerating). All surfaces are frictionless. Figure is not to scale. kg M2 =arrow_forward
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