An object follows a closed path consisting of 3 segments, C1, C2, and C3, surrounding a surface S as depicted in the diagram. Along its path, the object is subject to the force F = (0,−z+a, y+a) N, where a is a real constant. By calculating a line integral, find the work done on the object along C1and C3.
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An object follows a closed path consisting of 3 segments, C1, C2, and C3, surrounding a surface S as depicted in the diagram. Along its path, the object is subject to the force F = (0,−z+a, y+a) N, where a is a real constant.
By calculating a line integral, find the work done on the object along C1and C3.
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- An 7.7 kg crate is pulled 5.5 m up a 30° incline by a rope angled 17° above the incline. The tension in the rope is 100 N and the crate's coefficient of kinetic friction on the incline is 0.27. For help with math skills, you may want to review: The Vector Dot Product Part A How much work is done by tension, by gravity, and by the normal force? Express your answers in joules to two significant figures. Enter your answers numerically separated by commas. ► View Available Hint(s) WT. WG. W₁ = Submit Part B What is the increase in thermal energy of the crate and incline? Express your answer in joules to two significant figures. ► View Available Hint(s) ΠΑΠ ΑΣΦ AEth= [-] ΑΣΦ Submit ? J ?W = F₁Ax = ² · AX, Wnet = ½ m(v₁)² — ²/ m(v;)², W = ƒ Fxdx, W = S F · dř F SA 7.00-kg particle moves from the origin to position ©, having coordinates x = 6.50 m and y = 6.50 m as shown in the figure. One force on the particle is the gravitational force acting in the negative y direction. Using the equation (W = FAr cos 0 = F · Ař), calculate the work done by the gravitational force in going from O to © along the following paths. у (m) B (х, у) x (m) (a) the purple path (o0©) (b) the red path (O®© (c) the blue path (O© (d) Your results should all be identical. Why? This answer has not been graded yet.
- Problem1. A block slides on a rough horizontal surface from point A to point B. A force (magnitude P = 2.0 N) acts on the block between A and B, as shown. Points A and B are 1.5 m apart. (a) How much work is done on the block by the force P? (b) If the kinetic energies of the block at A and B are 6.0 J and 4.0 J, respectively, how much work is done on the block by the net force as the block moves from A to B? (c) What is the work done by the friction force? 40° BThe vector v=ai+bj is parallel to the line bx−ay=c. Use this fact to find an equation for the line through P parallel to v. Then draw a sketch of the line, including v as a vector starting at the origin. P(2,1), v=−2i−j How much work does it take to slide a crate 29 m along a loading dock by pulling on it with a 220-N force at an angle of 28° from the horizontal? (Round to the nearest whole number as needed.)Given: A shopper pushes a grocery cart for a distance 21 m at constant speed on level ground, against a 37.5 N frictional force. He pushes in a direction 22.5° below the horizontal. What is the work done on the cart by friction, in joules? What is the work done on the cart by the gravitational force, in joules? What is the work done on the cart by the shopper, in joules? Find the magnitude of the force, in newtons, that the shopper exerts on the cart. What is the total work done on the cart, in joules?
- samuel has is observing an object. you please determine the work that is done by F = 5i -2j+0k which is a force that is constant in moving samuel's object in a plane . samuel tells you that the object moves due to the force in a straight line in the plane. the straight line connects the points A(1,2) and the point B(3,7). I already know that the correct answer to this question is zero. but the question I have is WHY is it zero. explain why the work is zero in this senario. Not how you get to the answer zero, but why the answer zero can make sense in this scenario. is the forece perpendicualr to the direction? i am confused please help and i will like.An object moves in the x-y plane while acted on by the force F(x,y) = k1yi + k2xj, where k1 and k2 are constants with units of N/m. The object moves along a straight line path from Cartesian coordinate (x1, y1) to (x2, y2). Write an expression for the work done on the object by this force.