A force of magnitude 6 acts along the vector \[(9,\,6,\,-2)\] and passes through a point A (4, ? Calculate the work done if the direction of force is at an angle of 60° to the horizontal surface. If A = 2i − 3j − k and B = i + 4j − 2k, ﬁnd A × B and B × A. Ans. 10 Under a force F = (10i – 3j + 6k) N, a body of mass 2 kg is displaced from the position (6i + 5j -3k) m to the position ( 10i – 2j + 7k) m. calculate the work done. ... 6k c)6j d)-6j 28) line of action of force F=i-2j passes through a point whose position vector is j+k the moment of force about the origin is : a) ... 10i+3j-10k d)10i+3j+11k 33) If AB=0 A.B=0 then which of the following is/are correct : … Physics Assignment Help, What are the objectives of annealing, What are the objectives of annealing? A small object is located at point r 0 = 2i + 3j at time t = 0 it is trajected with an initial velocity of v 0 = 8i + 6k if air resistance is neglected find the velocity and the location of the object after 3 seconds. The figure below shows a surface S and the vector field F at various points on the surface. An icon used to represent a menu that can be toggled by interacting with this icon. Represent graphically (a) a force of 10 lb in a direction 30 north of east (b) a force of 15 lb in a direction 30 east of north. Find the. 3, 2) is A) 84. 4. The force of (10i - 3j + 6k) newton acts on a body of mass 5kg and displaces it from (6i + 5j- 3k) to (10i - 2j+ 7k ) metre. 100 units c. 2000 units d. 3000 units 3. 100 J b.121 J c. 148 J d. 0 J 2. How much work was done? A force of 10i-3j+6k acts on a body of 5 kg and it displace it from 6i+5j-3km to 10i – 2j +7km. El producto cruz de los vectores a 8a1, a2, a39 y b 8b1, b2, b39 12. a 3j 5 k, b i 2k es el vector 13-16 Q Nos dan las longitudes de dos vectores a y b y el ángulo u i j k entre ellos. For any content/service related issues please contact on this number . (a) Work done is zero , since there is no displacement in the direction of force A cube has numerically equal volume and surface area. The flux across S is the volume of fluid crossing S per unit time. The magnitude of a vector can be found by taking the square root of each of the vector components squared. (b) Choosing the unit of magnitude shown, the required vectors are as indicated above. Sol. Academia.edu is a platform for academics to share research papers. So you have: vecv*vecw=(5*3)+(-2*4)=15-8=7 You may check your result by plotting your vectors and using the alternative definition of dot product: vecv*vecw=|vecv|*|vecw|*cos(theta) i.e. The work done is: a. The work done is (AIIMS, 2003) (1) 121 J (2)0 (c) 100J (4) none of these. Mon to Sat - 10 AM to 7 PM If f (r) > 0 the force is directed away from 0 and the particle is under the influence of a repulsive force at 0. The man is pulling with a force of 200 pounds and the horse is pulling with a force of 1000 pounds 50¡ away from the direction of the pull of the man. Here, sufficient time is Round the answer to the nearest foot-pound. 13.6k 1 1 gold badge 29 29 silver badges 66 66 bronze badges. Derivation of formula for Flux. A body of mass 6 kg is under a force which causes displacement. 1. A force directed toward or away from a fixed point 0 and having magnitude depending only on the distance r from 0 is called a central force. (c) In time At the particle moves from M to N (see ad- … W = F.s ½ The moment of the force about the point O (1, ? Suppose the velocity of a fluid in xyz space is described by the vector field F(x,y,z).Let S be a surface in xyz space. A force vector is a vector that represents the direction and magnitude of an applied force. Under a force of 10i-3j+6k N,a body of mass 5kg is displaced from the position 6i+5j-3k to the position 10i-2j+7k Calulate the work done - Physics - Solution: WF Resultant Force Three forces with magnitudes of 400. newtons, 280 newtons, and 350 newtons act on an object at The volume of such a cube is: a. Example 6: A force of 90 pounds is used to pull an object along a level surface. direction and magnitude of the resultant force. 8788563422. applied at an angle of 43° to the surface and moves the object a total of 250 feet. 1 … Physics archive containing a full list of physics questions and answers from November 03 2020. answered Feb 27 '13 at 7:47. dmoti dmoti. 6. Slow cooling rate from the eutectoid temperature yields course pearlite - a mixture of relatively coarse crystals of ferrite and cementite. The force is . Find the work done by a force of 30,000N in moving an object through a distance of 45 m and also find the rate at which the force is working at a time when the velocity is 2 m/s for the following, (a) the force is in the direction of motion and (1.35 x 106 J, 6 x 104 w) (b) the force makes an angle of 40o to the direction of motion. (a) S Fig. vecv*vecw=7 The dot product is a scalar obtained by multiplying the corresponding components of the two vectors and adding (algebraically) the results. Use vectors to show that for any triangle, the medians (the three lines drawn from each vertex to the midpoint of the opposite side) all pass the same point. 49 1 1 silver badge 1 1 bronze badge $\endgroup$ $\begingroup$ Clever -- I like it. 9.5 EJERCICIOS CO N C E P TO S 11. a 1 2 i j 2 3 k, b 6i 12 j 6k 1. Such a slow cooling is known as annealing. 10i + 3j + 11k, −10i − 3j … ADVANCED-MATHEM-WPS-Office.doc - Free download as Word Doc (.doc), PDF File (.pdf), Text File (.txt) or read online for free. Example: A man and a horse are both pulling on a large rock. 7. $\endgroup$ – wcochran Aug 10 '16 at 14:49. (b) A force of 50 N acts on a body and moves it a distance of 4 m on a horizontal surface. You are very important to us. Force experience by moving charge in B III.Torque produce by force IV. 83. 70. d A 48,000-pound truck is parked on a slope Assume the only force to overcome is that due to (a) the force required to keep the truck from the hill and (b) the force perpendicular to the hill. 216 units b. bject is pulled 10 feet across a floor, using a force s. A force of (10i + 3j + 6k) N acts on a body of 5 kg and displaces it from (6i + 5j - 3k) to (10i - 2j + 7k)m. The work done is asked Sep 9, 2020 in Work, Energy and Power by AmarDeep01 ( 50.0k points) 1, ?7). N Unit = 5 lb N W E W F S Fig. Resultant Force Three forces with magnitudes of 75 pounds, 100 pounds, and 125 pounds act on an object at angles of 30, 45, and 120, respectively, with the positive x-axis. A force of 100 N makes an angle of with the x-axis and has a scalar y-component of 30 N. Find both the scalar x-component of the ... ^ 6k ^ is simply ~ 13k A reversed in direction. a force of 10i-3j+6k newton acts on a body of 5kg and it displacesfrom 6i+5j-3kmetre to 10i-2j+7k metre. 31. the work done is a)100j b)o c)121j d)none. The point is at two-thirds of the way of the median from the vertex. 1 Figure for 72 rting Cables Find the magnitude of the projection supporting cable onto the positive axis as figure. Is Physics archive containing a full list of Physics questions and answers from November 03 2020 for to... Of relatively coarse crystals of ferrite and cementite F at various points on surface... 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