A particle is launched from the origin in R^3 with initial velocity v(0) = < 0, 8, 10 > and undergoes constant acceleration a = < 2, - 1, - 5 > due to the combined forces of gravity and wind.
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A particle is launched from the origin in R^3 with initial velocity v(0) = < 0, 8, 10 > and undergoes constant acceleration a = < 2, - 1, - 5 > due to the combined forces of gravity and wind.
If the force of the wind on the particle is given by the:
vector field F(x, y, z) = 4i - 2j
Find the total work is done by the wind on the particle over the course of its trajectory.
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- The gravitational field of a spherical object at any distance from it points back to the center of the object. That is, in the field simulator it has arrows toward the center of the sphere. Put a test mass in this field and it will fall toward the center with increasing speed following the line of force. Locally, the field is the acceleration of gravity at that point. Now, how would you move a small mass so that you would not have to do work on it during the move? That work would be the change its energy. You would move it radially toward the center. You would move it radially away from the center. You would move it perpendicularly to the line of force, that is, move it in a local plane that is perpendicular to the radius at that point. There is no way to do this. Any displacement direction will take work.Current Attempt in Progress a In the figure, a horizontal force F of magnitude 18.0 N is applied to a 3.03 kg book as the book slides a distance d = 0.51 m up a frictionless ramp at angle 0 = 30°. (a) During the displacement, what is the net work done on the book by Fa, the gravitational force o the book, and the normal force on the book? (b) If the book has zero kinetic energy at the start of the displacement, what is its speed a the end of the displacement? Use g=9.81 m/s². ar (a) Number i (b) Number Units Units Psychology 8 +7The force of attraction on an object below Earth’s surface is directly proportional to its distance from Earth’s center. Find the work done in moving a weight of w lb located a mi below Earth’s surface up to the surface itself. Assume Earth’s radius is a constant r mi.
- Suppose a box of mass 5 kg is initially at rest on a frictionless horizontal surface. A constant force of 10 N is applied horizontally to the box for 4 seconds, and then a 7 N force of the same direction is applied for another 4 seconds. (a) Find the total distance that the box traveled. (b) Find the total work done on the box.A particle moves in the xy plane (see the figure below) from the origin to a point having coordinates x = 7.00 m and y = 4.00 m under the influence of a force given by 7 = -2y²1 - 3x1. y (m) 2 (7.00, 4.00) x (m) (a) What is the work done on the particle by the force F if it moves along path 1 (shown in red)? -84 (b) What is the work done on the particle by the force F if it moves along path 2 (shown in blue)? -224 (c) What is the work done on the particle by the force F if it moves along path 3 (shown in green)? -32.7 X Your response differs from the correct answer by more than 10%. Double check your calculations. J (d) Is the force conservative or nonconservative? conservative nonconservativeA particle moves along a curved path y(x) = (10 m){1+cos[(0.1 m−1)x]} , from x = 0 to x = 10π m, subject to a tangential force of variable magnitude F(x) = (10 N)sin[(0.1 m−1)x]. How much work does the force do? (Hint: Consult a table of integrals or use a numerical integration program.)
- The potential energy of a system is given by: U(x,y,z)=5(J/m^2) x^2 + 7(J/m^3) xy^2 + 8(J/m^2) zy Find: The force acting on the system. Write the forces as the sum of its components. The magnitude of the force when x=1, y=0, z=2Problem Thirteen. A potential energy function is given by U(r)=U2 where o = 2.00 m r r and U, = 1.00 J. Find the magnitude of the force at r= 1.00 m. Give an answer in kN. 25.) (A) 280 (В) 106 (С) 420 (D) 470 (E) 530A force F = (8 i - 33) N acts on a particle that undergoes a displacement Ař = (4 î + î) m. (a) Find the work done by the force on the particle. (b) What is the angle between F and Ar?
- 2. A particle moves along line segments from the point (2,0,0) to the points (2,2, 2), (0,2,2), and back to (2,0,0) under the influence of the force field F(x, y, z)= 2e'i+(3z + 4x)j+(y+3x)k Find the work done.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?Chapter 07, Problem 015 GO The figure shows three forces applied to a trunk that moves leftward by 2.87 m over a frictionless floor. The force magnitudes are F1 = 4.69 N, F2 = 9.16 N, and F3 = 3.25 N, and the indicated angle is 8 = 60°. (a) During the displacement, what is the net work done on the trunk by the three applied forces, the gravitational force, and the normal force? (b) Is there a net transfer of energy to or from the trunk? (c) Does the kinetic energy of the trunk increase or decrease? (a) Number Units (b) () the tolerance is +/-5% Click if you would like to Show Work for this question: Open Show Work