61 SSM A block of mass m, 40kg is put on top of a block of mass5.0 kg. To cause the top blockto slip on the bottom one while thebottom one is held fixed, a horizon-tal force of at least 12 N must be ap-plicd to the top block. The assembly Fig. 6-47 Problem 61.of blocks is now placed on a hori-zontal, frictionless table (Fig. 6-47). Find the magnitudes of (a) the 2.maximum horizontal force that can be applied to the lower blockso that the blocks will move together and (b) the resulting acceler-1.ation of the blocks

Answered: 61 SSM A block of mass m, 40 kg is put…

College Physics

11th Edition

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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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Determine the height h above the base B at which the resultant of the three forces acts. 220 lb 38" 610 lb 38" 260 lb 38" Answer: h= i B in.
(B) A maintenance man (climber) tries to maintain one of the power stations located at thetop of the mountain in the situation of winter. During his work and by mistake drops hiswater bottle which then slides 100 M down the side of a steep icy slope to a point which is10 m lower than the climber's position. The mass of the climber is 60 kg and his water bottlehas a mass of 500 g.1) If the bottle starts from rest, how fast is it travelling by the time it reaches the bottomof the slope? (Neglect friction.)What is the total change in the climber's potential energy as she climbs down the mountainto fetch her fallen water bottle? i.e. what is the difference between her potential energy atthe top of the slope and the bottom of the slope? Analysis all the above situation.
Mez0,3 30° The loaded cradle has a weight of 600 N. A force of P 250 t acts on it. The slide stands still before the load P is applied. The kinetic coefficient of friction between the slide and the plane is the initial z 0.3. Calculate the speed of the slide 3 s after P is applied.
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71 SSM Figure 5-60 shows a box of dirty money (mass m = 3.0 kg) on a frictionless plane inclined at angle 6, = 30°. The box is con- nected via a cord of negligible mass to a box of laundered money (mass m; = 2.0 kg) on a frictionless plane inclined at angle Oz = 60°. The pulley is frictionless and has negligible mass. What is the ten- sion in the cord? Figure 5-60 Problem 71.
A metal weight of mass 15 kg rests on a smooth (that is, frictionless) icy slope that makes an angle of 25° with the horizontal. It is attached to a rope that passes over a pulley at the top of the slope. The other end of the rope is attached to a crate of mass 12 kg that rests on a rough horizontal plank but irov odi is on the point of slipping along the plank. The coefficient of static friction between the crate and the plank is μ. metal weight 25° anolaups Tisda daiw alodasqyd sdt crate sib baa inol aino risa en't lo molisa planka) inabeup M etaduraszoq oda la coulev er no icy slope pulley inson oris 0-8-8-8 + f +vs otros sistensgeb-non pinos lo og oft sai toy, to todensee sobivora bm amizM sulau piuco Model the metal weight and the crate as particles, the rope as a model string ibal and the pulley as a model pulley. Let g denote the magnitude of the acceleration due to gravity (in ms-2). Moisteos ada obulord nov taifs oua sizsin OJ h (a) (i) State the three forces that act on the…
An object of mass m is at rest on a rough horizontal plane with a coefficient of static friction ue between the surface and the object. A force F is applied in the direction shown in the figure. The minimum force required for the block to be about to move is: F mg He cos 0 sen 0 Hemg cos 0 + le sen 0 a) F = b) F = Hemg cos 0- sen 0 c) F = Hemg cos 0- He sen 0 d) F
Ans. 11-2.6. In Fig. P-11-2.5, assume P= 200 lb and the coefficient of kinetic friction is 0.5. Find the acceleration of the body under the following conditions: (a) the body is moving rightward; (b) the body is moving left- ward; (c) the body starts from rest. 11.-27. When a 644-1b boat is moving at 10 fps the motor conks out
The force P is applied to (a) the 79-lb block and (b) the 124-Ib block. For each case, determine the magnitude of P required to initiate motion. H = 0.37 79 lb Р (а) H = 0.20 124 lb --->P (b) Answers: (a) P = i Ib (b) P = i Ib
A 1.75 kg wood block is on a horizontal wood surface and a light string attached to the block passes over a frictionless pulley to a 775 g load that hangs freely (Fig. 8-10). If the 1.75 kg block is initially sliding toward the pulley, find (a) the acceleration of the block, and (b) the tension in the string
B 60° Figure 3 L A 5. A beam AB of length 10m and negligible mass leans against a wall at an angle of 60° to the horizontal. It is held at B by a string as shown. There is no friction at either of the ends A or B. A koala of mass M = 10 kg climbs up the beam from B. If the breaking tension of the string is 40 N, find the distance reached by the koala just before the string cannot support any more weight and breaks.

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