A mass m, which is connected to a spring of spring constant k, is released from 2 = A to perform a simple harmonic motion. Another mass 2m, which is connected to another spring of the same
spring constant k, is also released from I= A to perform a simple harmonic motion. Compare the
values of total mechanical energy stored in these two spring-mass systems.

In the middle of the night you are standing a horizontal distance of 14.0 m from the high fence that surrounds the estate of your rich uncle. the top of the fence is 5.00 m above the ground. you have taped an important message to a rock that you want to throw over the fence. the ground is level, and the width of the fence is small enough to be ignored. you throw the rock from a height of 1.60 m above the ground and at an angle of 54.0 degrees above the horizontal. part a part complete what minimum initial speed must the rock have as it leaves your hand to clear the top of the fence? express your answer with the appropriate units. part b for the initial velocity calculated in the previous part, what horizontal distance beyond the fence will the rock land on the ground?