Physics, 26.04.2020 07:00 melissa3333
A block of mass 1.0kg on a horizontal surface is attached to a horizontal spring of negligible mass and spring constant 100N/m. The other end of the spring is attached to a wall, and there is negligible friction between the block and the horizontal surface. When the spring is unstretched, the block is located at x=0m. The block is then pulled to x=0.5m and released from rest so that the block-spring system oscillates between x=−0.5m and x=0.5m , as shown in the figure. Which of the following descriptions about the system are correct?
Select two answers.
A) The kinetic energy of the block and the spring potential energy of the system at x=0.25 m are both half of the total mechanical energy of the system.
B) The spring potential energy of the system at x=0.25m is nearly 3.13 J.
C) The kinetic energy of the system at x=0.3m is nearly 4.5J .
D)The sum of the spring potential energy of the system and the kinetic energy of the block at x=0.4m is nearly 12.5J .
Answers: 3
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Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?
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Physics, 23.06.2019 07:00
Auniform brick of length 25 m is placed overthe edge of a horizontal surface with a maximum overhang of 12.5 m attained withouttipping. now two identical uniform bricks of length25 m are stacked over the edge of a horizontalsurface. what maximum overhang is possible forthe two bricks (without tipping)? answer in units of m.
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A block of mass 1.0kg on a horizontal surface is attached to a horizontal spring of negligible mass...
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