It would be B because it makes science to the topic
Answer:
The balls velocity is 1 divided by 3
Answer:
The energy of the system shall be 8 Joules
Explanation:
In an undamped simple harmonic motion the total energy of the system is conserved which means that the sum of potential and kinetic energies of the system remains constant throughout the motion of the system
In the given problem The total energy of the system at
is
This energy shall remain conserved throughout the motion thus when the system is at
The total energy of the system shall still be 8 Joules.
Answer:
potential energy PE = M g h
KE at bottom = 1/2 M V^2
Regardless of the slope of the slide the change in energy is the same
1/2 V^2 = g h
V = (2 g h)^1/2 = (2 * 9.8 m/s^2 * 10 m)^1/2 = 14 m / s
Perhaps the question says that h = 55 * .1 = 5.5 m
Then V = (2 * 9.8 * 5.5) = 10.4 m/s
Answer:
The loss in mechanical energy is 668.25 J
Explanation:
As per the question:
Mass of the base runner, m = 66 kg
Velocity of the runner, v = 4.5 m/s
Coefficient of friction, ![\mu = 0.70](https://tex.z-dn.net/?f=%5Cmu%20%3D%200.70)
Now,
The mechanical energy lost due to friction is provided by the work done in the form of the Kinetic energy of the runner:
Work done, W = Kinetic enrgy of the runner
W = ![\frac{1}{2}mv^{2}](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7Dmv%5E%7B2%7D)
W = ![\frac{1}{2}\tiems 66\times (4.5)^{2} = 668.25 J](https://tex.z-dn.net/?f=%5Cfrac%7B1%7D%7B2%7D%5Ctiems%2066%5Ctimes%20%284.5%29%5E%7B2%7D%20%3D%20668.25%20J)
Work done must be - 668.25 J as the runner slows down.