10. The force acting on an object varies as shown in the figure below. Determine the work done by the force as the particle moves from 0 to 12 m. Write your answer with 2 significant figures, type of work (+ or - if non- zero) and correct unit to earn full credit. * 4 3 14 10 12 -1 -2 -3 position, x (m) Force, F (N) 2.
Q: . Review the concept of work. Suppose an object is under the action of a constant force. Make…
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- 7. A 1650 kg car accelerates up a hill by applying a force of 4.61 × 10³ N parallel to the hill. The hill is at an incline of 13°. m 2016 d = 17 m 13° A. What is the net work done on the car as it travels 17 m up the hill? (Hint: calculate the work done by each force in the system. There are 3 forces. The net work is the sum of the works done by each individual force.) b. What is the change in kinetic energy for the car? at the bottom of the hill. How fast is it moving at the top The car is travelling at a speed of 16 of the hill? I= c) 74°FQUESTION 9 While moving a package up and down on a storage shelf the mover does +500 J of work and gravity does-500 J of work. Which statement is true about the Potential Energy and the Kinetic Energy of the package: A. The Potential Energy of the package is decreased. B. The Potential Energy of the package is increased. C. The Kinetic Energy of the package is increased. D. The Kinetic Energy of the package is decreased. E, The Potential Energy of the package does not change.Suppose a 1300-kg elevator car is lifted a distance 45 m by its cable at a constant speed, assuming the frictional force on the elevator has a constant value of 1350 N. 1.Calculate the work done on the elevator by its cable, in joules. 2.Calculate the work done by the gravitational force on the elevator, in joules, during this process. 3.Calculate the total work done on the elevator, in joules.
- 1. A constant 15 N horizontal force is applied to a 15 kg cart at rest on a level floor. If friction is negligible, what is the speed of the cart after it has gone 8.0 m? Think and Prepare 1. You are going to use the Work-Energy Theorem for this problem 2. How will you figure out the change in KE of the cart? 3. How will you figure out the work done by the force? Enter to 2 significant figures Speed after 8 m = m/s1. A spring with a force constant of 3.5 x 104N/m is initially at its equilibrium length.(a) How much work must you do to stretch the spring 0.050m?(b) How much work must you do to compress it to 0.050m?Explain and draws.4. A 130 N force is applied on the handle of a lawn mower. The handle makes an angle of 50° with the ground as the lawnmower moves across the ground. Determine the following: a. the magnitude of the component of the force acting in the direction of motion. b. the work done by this force if the lawnmower is pushed 15 m across the ground. 5. John does 176 J of work lifting himself 0.300 m. What is John's mass?