Reference no: EM13862170
A block attached to a vertical spring oscillates up and down. When the block is in its highest position, which of the following statements is true about its momentum P?
A. P=0, dp/dt points down
B. P points down, dp/dt points down
C. P=0 dp/dt=0
D. P points down, dp/dt=0
E. P=0, dp/dt points up
I doubt that the answer is A.
I know that in its highest position v=0, so momentum should be zero,
but Im not sure which direction dp/dt points.
I know that dp/dt indicates net force, but in this case I think net force is equilibrium due to the fact that it is stationary in its highest points.
Is it because gravitational force points down? I don't get it.
|
Perspective is relevant
: Sociologists explain deviance by three (3) major perspectives: biological, functional conflict, and symbolic interaction. Identify your role, for example, as a parent and which perspective best reflects your personal experience. Discuss the main reas..
|
|
Grief and mourning in schizophrenia
: Grief and Mourning in Schizophrenia- The relationship between grief and mourning and a diagnosis of schizophrenia, The necessity of addressing grief and loss during the treatment process
|
|
The pilot makes the loop with this smallest radius
: A 90kg jet pilot flies in a vertical loop. If the jet's speed is 1100 km/hr at the bottom of the loop, what is the smallest radius that guarantees the acceleration of the pilot will be less than or equal to 4.0 g's (4.0 x 9.8 m/s^2) . Assuming the..
|
|
Two workers are sliding a 300 kg crate across the floor
: Two workers are sliding a 300 kg crate across the floor. One worker pushes forward on the crate with a force of 380 N while the other pulls in the same direction with a force of 350 N using a rope connected to the crate. Both forces are horizontal,..
|
|
A block attached to a vertical spring oscillates up
: A block attached to a vertical spring oscillates up and down. When the block is in its highest position, which of the following statements is true about its momentum P? A. P=0, dp/dt points down B. P points down, dp/dt points down
|
|
Explain how the weighing scale you have dissected works
: Explain how the weighing scale you have dissected works. Sketch free-hand an alternative design for the artifact. Write a one-page essay about how your design works.
|
|
The vertical when the pendulum is at its maximum displacemen
: A 28 g rifle bullet traveling at 430 m/s buries itself in a 3.6 kg pendulum hanging on a 2.8 m long string, which makes the pendulum swing upward in an arc. Determine the angle the string makes with the vertical when the pendulum is at its maximum di..
|
|
Develop international marketing strategy for uae basecompany
: Develop an international marketing strategy for the UAE based company going global. Assume you are a SME and develop strategies accordingly Market entry strategies.
|
|
Seniority and time-based pay
: Michelle has just offered a job at Mullaney/Hunter Enterprises in the production line. Michelle expects to stay at this firm for at least 40 years, during this time her productivity, V, is given by the first column in the attached table.
|