Elements Of Electromagnetics
7th Edition
ISBN: 9780190698614
Author: Sadiku, Matthew N. O.
Publisher: Oxford University Press
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Transcribed Image Text:Q6-Determine the maximum force P that can be applied without causing
movement of the 90-kg crate that has a center of gravity at G. The
coefficient of static friction at the floor is us = 0.5, as shown in the
Figure 10.
1.2 m
0.5 m 0.5 m
0.7 m
1m
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- Make it simple as possible. final answer must be correct.arrow_forwardNeed help please round answers to 3 sig figs. Thanksarrow_forwardA 250 lb refrigerator is being pushed. You do not know what force P should be applied. The coefficient of static friction between the refrigerator and floor is lg = 0.4. The center of gravity of the refrigerator is at point G. - d2 -- d2 F1 d3 d1 d4 Values for the figure are given in the following table. Note the figure may not be to scale. Variable Value di 4.5 ft d2 1.5 ft d3 2.5 d4 3.5 a. Determine the force P that is needed to overcome friction. b. Determine the location of the normal force r measured from the center of the refrigerator if the force P from part a is applied. c. Determine the minimum force P that is required to tip the refrigerator. d. Will the refrigerator slip or tip first? Round your final answers to 3 significant digits/figures. P= lb ft Pip = lb Will the refrigerator slip or tip first? tip O sliparrow_forward
- 2. The coefficient of static friction between all contacting surfaces is μ = 0.4. The weight of each box is the same, W, and the center of gravity of each box is at its geometric center. a) Determine the minimum horizontal force P needed for the top box to be on the verge of sliding across the top of the lower box (be sure to provide a free body diagram). Is this situation physically possible? b) Determine the minimum horizontal force P needed for both boxes to tip together (be sure to provide a free body diagram). Is this situation physically possible? c) Based on your solutions to parts 'a' and 'b' (no new analysis required), if the magnitude of P is slowly increased from a value of zero, which of these two situations will be realized? 1 m 1 m 0.5 m- [ 1.5 marrow_forwardA chain having a length L and weight W rests on a street for which the coefficient of static friction is us. If a crane is used to hoist the chain, determine the force P it applies to the chain if the length of chain remaining on the ground begins to slip when the horizontal component is Px. What length of chain remains on the ground? Given: L = 20 ft W = 8lb/ft = 0.2 us= : 10 lb Px =arrow_forwardCalculate the magnitude of the horizontal force P, acting as shown, that will cause motion to impend for the 450-lb crate. (The motion may be either sliding or tipping.) Assume the coefficient of static friction to be 0.40. - Draw Free-body diagram - Use formula Fmax= Ms N - Save time Solve most simple wayarrow_forward
- Determine the maximum allowable weight of the drum for the system shown below if the system is to be in equilibrium. The block weighs 60 lb and the coefficient of static friction for all surfaces is 0.4 7" 4" 25 O 9" 13" 18"arrow_forwardM. 0.3 m The block brake is used to stop the wheel from rotating when the wheel is subjected to a couple moment. Determine the smallest force P that should be applied as well as the magnitude of the corresponding reaction force at support C. Use the couple moment Mo = 430 N-m, the coefficient of static friction between the wheel and the block of 0.6, a = 1.8 m, b = 0.8 m, and c = 0.075m. Round all answers to the nearest integer. The smallest force P that should be applied is: N. The magnitude of the reaction force at support C is: N.arrow_forwardDraw fbd separately ,Better to go with handwritten format.arrow_forward
- The 250 lb uniform crate (center of gravity at G) shown in the figure must be moved without tipping. The applied force P is horizontal. 1.5 ft 1.5 ft Determine: a. The largest coefficient of static friction between the crate and the floor that allows the crate to slide and 2.5 ft P. not tip 4.5 ft b. The corresponding magnitude of P 3.5 ft Include all needed FBD's to solve, and put units on your answers.arrow_forwardI need a process for this problemarrow_forwardNonearrow_forward
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