greater 2 boxes, A and B, an the mass of Box A. Both boxes are pulled by a force in the horizontal direction, with th having the similar magnitude F. In the instance wherein there is no friction present tween Box B and the floor, and there is enough friction between Boxes A and B in der for them to travel together as a unit, choose from the given FBDS that best presents Box A? A F В F NAonB A B NBonA F F WA NBona NBonA D F+f
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- O Macmillan Learning A single-celled animal called a paramecium propels itself quite rapidly through water using its hair-like cilia. A certain paramecium experiences a drag force of Fdrag = magnitude: -bu² in water, where the drag coefficient b is approximately 0.310 kg/m. If the paramecium's speed u is 0.000147 m/s, what is the magnitude of the propulsion force that the creature must generate to move at this constant speed? NHW QI) Knowing that the coefficient of friction between the 25-kg block and the incline is µ = 0.25, determine (a) the smallest value of P required to start the block moving up the incline, (b) the corresponding value of B. P 25 kg 30° Q2) The coefficients of friction between the block and the rail are u. = 0.30 and le = 0.25. Knowing that 0=65°, determine the smallest value of P required (a) to start the block moving up the rail, (b) to keep it from moving down. 35° 500 N Q3) The coefficients of friction are . = 0.40 and ue = 0.30 between all surfaces of contact. Determine the smallest force P required to start the 30-kg block moving if cable AB (a) is attached as shown, (b) is removed. A 20 kg 30 kgA horizontal force, Fm, is applied to a book that is on a rough horizontal tabletop. As a result the book is accelerating to the right. If necessary, use Fs for the force of static friction and Fk as the force of kinetic friction. Draw a free body diagram for the book
- Show that the acceleration of any object down an incline where friction behaves simply (that g(sin @ — иk сos @). is, where fk = HK N) is a = g(sin 0 – µk cos 0). Note that the acceleration is independent of %3D mass and reduces when friction becomes negligibly small (Hk = 0). YA aConsider the 65.0 kg Ice skater being pushed by two others shown In the figure. Frot F2 Free-body diagram F, F, F, (a) Find the direction (in degrees) and magnitude (in N) of F,et, the total force exerted on her by the others, glven that the magnitudes F, and F, are 25.2 N and 15.4 N, respectively. direction o (counterclockwise from the direction of F, is positive) magnitude (b) What is her initial acceleration (in m/s?) if she is initlally stationary and wearing steel-bladed skates that point in the direction of F? (c) What is her acceleration (in m/s2) assuming she is already moving in the direction of Fot? Remember that friction is always in the opposite direction of motion or attempted motion between surfaces in contact. m/s? (in the direction of Frot)b) A wagon carrying a child, with a combined mass of 52 kg, was pulled by an adult with a force of 138N [forward] on a bumpy road with a friction force of 26N. QA4.3kg bowling ball was rolled out onto the smooth frictionless lane with an applied force of 17N [forward]. ) Draw FBD here: ) Draw FBD here: Determine the net force (with direction) acting on the underlined object: 0Determine the net force (with direction) acting on the underlined object ) Determine the acceleration of the underlined object: ) Determine the acceteration of the underlined object:
- Asap plzzzU) Wildl iS tne timuSt TUrte Ul the nuciedi engine III NEWLUIS? Problem 4) A tesla model X electric vehicle is driving from Boston to Lenox on 195, on a straight section of the highway, no traffic and perfect weather at 70 miles/per hour. It has a perfectly constant speed. Can you say it has no forces acting on it since there is no acceleration?Please show work thank you
- A box is sliding along a slippery, horizontal floorat a constant speed of 5.0 m/s. It encounters arough patch on the floor. If the coefficient ofkinetic friction between the box and rough patchis 0.5, determine how far the box will travelbefore coming to a stop. The mass of the box is3.5 kg.Your car (1153 kg) dies & you need to get it out of a parking spot. You & your friends apply 6959 N [R 16O D] for 10 seconds. It then starts to move on its own. If the coefficient of friction is 0.31, how far will it travel in total?D