Is it possible for the total mechanical energy of a moving particle to be negative? No, because a moving particle has positive kinetic energy. Only if friction is involved. No, because potential energy cannot have a value more negative than the value of the positive kinetic energy of the particle. yes
Q: A mass m is thrown horizontally off a cliff from a height h. It leaves the thrower's hand (exactly…
A: Given,Mass,=mHeight=hKinetic energy y direction is change in gravitational energy which is mgh
Q: A 8.79-kg particle is subject to a net force that varies with position as shown in the figure. The…
A: Part a: answer: 1.306 m/sec Part b: answer: 2.263 m/sec Part c: answer: 2.613 m/sec Thank…
Q: A 4.8 kg body is at rest on a frictionless horizontal air track when a constant horizontal force F…
A: We will answer this question using kinematic equation of motion, Newton's equation of motion and…
Q: A 15 kg box is being pushed 4.0 m along a rough horizontal surface at a constant velocity by a…
A: Given: The mass of the box: m=15 kg Distance moved: D=4.0 m Applied force: Force: F=25 N
Q: Is it possible for the total mechanical energy of a moving particle to be negative
A: Total Mechanical energy is the sum of kinetic energy(K.E) and Potential Energy (P.E) Kinetic energy…
Q: A particle moves in a region where the potential energy is given by PE=2x^2 + x^4 ; PE is in Joules…
A: Solution: Given the Potential Energy of the system (PE) =2x2+x4 Where, PE is in Joules and x…
Q: Part A (Figure 1) shows the potential energy of a 260g particle as it moves along the a-axis. What…
A: Given value--- mass = 260 g. we have to find--- What is the maximum speed the particle could have…
Q: A 7.3 kg brick moves along an x axis. Its acceleration as a function of its position is shown in the…
A:
Q: A constant force F = (10.0i + 9.0j + 12.0k) N acts on a particle as it moves along a straight-line…
A: To find work done, we use expression relating work to force and displacement. To find the angle, we…
Q: Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 95.0 kg, down a 0 =…
A: Given data: The total mass is m=95 kg. The inclination of slope is θ=70°. The coefficient of…
Q: A 350 kg sofa slides 2.5 m down a 30° incline and who is pushing back on it parallel to the incline…
A: Given:- The mass of the sofa m = 350 kg The sliding length L = 2.5 m The angle of the incline is…
Q: A particle with a mass of 2.00 kg moves along the x axis. Initially, the particle’s position is x =…
A: (a) From the graph provided in the question, the potential energy of the particle at x = 1 m is:…
Q: A force with varying magnitude Fx is applied on an object and the displacement of the object is…
A:
Q: Suppose the ski patrol lowers a rescue sled and victim, having a total mass of 80.0 kg, down a ? =…
A: Note: As per the guidelines, we can only answer three subparts of a question. Sorry for the…
Q: 16. A force F = (3i – 5+ 2k)N acts on a particle giving it a displacement of(3i + 4k)m. The work…
A:
Q: An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and…
A: Work done can be defined as the change in kinetic energy. Now for the first part of problem, we know…
Q: A 6.20 kg block is pushed 9.35 m up a smooth 38.0° inclined plane by a horizontal force of 75.0 N.…
A: We will find initial kinetic energy using kinetic energy expression. Then we will draw a free…
Q: A particle of mass m moves along the x axis. Its position varies with time according to x = in…
A:
Q: 4. A 4.7 kg block is pushed 3.1 m up a vertical wall with constant speed by a constant force of…
A:
Q: A bungee cord exerts a nonlinear elastic force of magnitude F(x) = k1x + k2x°, where x is the…
A:
Q: An object with an initial potential energy of 40 J is dropped from rest. After a while, its…
A: Initial potential energy is PEinitial = 40 J Potential energy after a while is PEfinal = 10 J…
Q: A 7.44-kg particle is subject to a net force that varies with position as shown in the figure. The…
A:
Trending now
This is a popular solution!
Step by step
Solved in 2 steps
- A factory worker pushes a 24.0 kg crate a distance of 8.0 m along a level floor at constant velocity by pushing horizontally on it. The coefficient of kinetic friction between the crate and floor is 0.24. What magnitude of force must the worker apply? How much work is done on the crate by this force? How much work is done on the crate by friction?A 7.44-kg particle is subject to a net force that varies with position as shown in the figure. The particle starts from rest at x = 0. Fx (N) 3 2 2 4 6 8 10 12 14 16 What is its speed at the following positions? (a) x = 5.00 m x (m) X Can you determine the kinetic energy of the particle at x = 5.00 m from the given graph? m/s (c) x = 15.0 m (b) x = 10.0 m 1 X How would you calculate the total work done on the particle between 0 and 10 m? m/s X The force is positive throughout the entire interval. Does it make sense that the speed would decrease m/sA 1350-kg car is traveling with an initial speed of 25.0 m/s. Determine the car's speed after -2.20 × 10° J of net work is done on the car. X m/s
- The kinetic energy of a system must always be positive or zero. Explain whether this is true for the potential energy of a system.3. Suppose you have an object attached to a bizarre spring, initially located at x = 0, the equilibrium point of the force of the spring on the object is given by F₁ = kx, S where k is a spring constant. (a) You displace the object from x = 0 to ₁ > 0, holding the object steady at the beginning and end. What is the work done by the spring? What is the work done by you? (b) You let go of the spring and observe the object move from location. x₁ to x2. Is x2 less than or greater than ₁? (c) What is the kinetic energy of the object at x2? (d) Is this bizarre spring realistic? Explain.A 5.8 kg body is at rest on a frictionless horizontal air track when a constant horizontal force F acting in the positive direction of an x axis along the track is applied to the body. A stroboscopic graph of the position of the body as it slides to the right is shown in the figure. The force F is applied to the body at t = 0, and the graph records the position of the body at 0.50 s intervals. How much work is done on the body by the applied force F between t = 0 and t = 1.0 s? t = 0 -0.5 s -1.0 s -1.5 s -2.0s 0.4 x (m) 0.2 0.6 0.8
- A particle with a mass of 2.00 kg moves along the x axis. Initially, the particle's position is x = 1.00 m and its speed is 4.00 m/s. The graph below shows the potential energy of the particle vs. position. Assume that the total mechanical energy of the particle is conserved throughout its motion. + U (Joules) 20.0 (a) What is the total mechanical energy of the particle (E = K + U), in units of Joules (J)? 15.0 – 10.0 5.00 x (meters) 1.00 2.00 3.00 4.00 -5.00 (b) What is the speed of the particle when it is located at x = 2.00 meters? Give your answer in meters per second (m/s). (c) What are the equilibrium positions of the particle? For each equilibrium position, determine whether it is stable or unstable.1. A 4.0 kg particle is moving at a velocity v = V2î – V2ĵ + 3k m/s. (a) (b) What is the particle's kinetic energy at this moment? What is the net work done on the particle if its velocity changes to - V2î + 3k m/s? V = - Assume that a force in the x y plane acts on the particle to slow it down (imagine (c) that this force is a type of friction). Will the particle's kinetic energy become zero under the influence of this force? Explain your answer.A 199 kg crate hangs from the end of a rope of length L = 13.7 m. You push horizontally on the crate with a varying force F to move it distance d = 4.25 m to the side (see the figure). (a) What is the magnitude of F when the crate is in this final position? During the crate's displacement, what are (b) the total work done on it, (c) the work done by the gravitational force on the crate, and (d) the work done by the pull on the crate from the rope? (e) Knowing that the crate is motionless before and after its displacement, use the answers to (b), (c), and (d) to find the work your force F does on the crate.
- A lawn mower tractor pulls a large and heavy sled during a pulling game at a county fair. The force during the pull is monitored and recorded by instruments. The figure shows the force as a function of displacement. F (KN) 12 11 10 9 8 7 6 5 4 3 2 1 0 6 7 8 9 10 11 12 x (m) What was the total amount of work done by the tractor? 74.5 kJ 0 1 2 3 4 5 Incorrect. What was the average power of the tractor, if the pull lasted for 7.90 seconds? 9.43 W Incorrect.Can the work done by Friction be zero? In a case where static friction exists, the object does not move and the change in kinetic energy is also zero? W = Fd = ?KE = 0? What did I do wrong?A 3.0 kg block is thrown downward from a point 37 m above the Earth's surface. At what height above Earth's surface will the gravitational potential energy of the Earth-block system have decreased by 320 J? O 11m O 37 m O 7.0 m O 26 m O 48 m Save for Later Submit Answer