Answer Happy

Potential energy 2.0 3.0 5.0 6.0 Position (m) The graph above shows the potential energy associated with a conservative force that acts on a 0.225 kg object. To answer the questions below, assume you can read the graph to (as least) two significant figures. Assume there is no friction and there are no other forces on the object (this may seem like a bad assumption but plots such as this are often used in molecular physics and space physics and it is an excellent assumption in both cases). 1) When the object is at x = 0.99 m, the potential energy of the system is -1.96 J. When the object is at x = 1.01 m, the potential energy of the system is -2.04 J. If the object is placed at the point x = 1.00 m, what is the conservative force on the object? (The sign is important. A positive number represents a force pointing to the right.) Submit + 2) The object is released at rest at the point x = 1.0 m. Some time later, the object is at the point x = 2.0 m. What is the speed of the object at this time? m/s Submit + 3) Again, the object was released at rest at the point x = 1.0 m. Some time later, the object is at the point x = 2.0 m. What is the magnitude of the conservative force on the object at at this time? 2 N Submit Potential energy (J) 0 ر نہ بن ط ष 00 + 1.0 4.0

Your submissions: 2 x Submitted: Tuesday, June 7 at 12:07 PM Computed value: 2 Feedback: 4) The object is released at rest at the point x = 1.0 m. Some time later, the object is at the point x = 2.5 m. The potential energy of the system is -3.5 J at when x = 2.5 m. What is the speed of the object at this time? m/s Submit + 5) If the object is to be released at the point x = 1.0 m, and the goal is to give the object enough energy to get to the point x = 4.5 m, what is the minimum amount of kinetic enery the object needs when it is at x = 1.0 m? Submit + 6) If the object is to be released at the point x = 1.0 m, and the goal is to give the object enough energy to get to the point x = 4.5 m, what is the minimum speed the object needs when it is at x = 1.0 m? m/s Submit + 7) If the object is released from rest at x = 1.0 m with the speed that is calculated in question 6, what will be the speed of the object when it reaches the point x = 4.5 m? [HINT: You may use your answer to question 6, but it is also possible to get this right without knowing the answer to question 6.] Submit +