In the early 19th century Christian Doppler, an Austrian physicist, proposed a theory regarding the properties of a moving sourc
1 answer:
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Answer:
8.56 m/s2
Explanation:
Using law of energy conservation while taking into account of the rotational and translation kinetic energy, when the solid cylinder rolls down the incline we have the potential energy converted to kinetic energy:
where m is the mass, is the moments of inertia of the solid cylinder
is the angular speed of the cylinder
So if you plot a liner chart of h vs and get a slope of 6.42 then that means 3/(4g) = 6.42 so
The gravitational acceleration on this planet is 8.56 m/s2
Answer:
The value of the potential energy of the particle at point B is 85 joules.
Explanation:
According to the Principle of Energy Conservation, the energy cannot be created nor destroyed, only transformed. The particle at point A has kinetic and potential energy and receives a work due to an external conservative force (Work-Energy Theorem), whose sum is equal to potential energy at point B. Mathematically speaking, the expression that describes the phenomenon is:
Where:
- Kinetic energy at point A, measured in joules.
- Potential energy at point A, measured in joules.
- Work due to conservative force from A to B, measured in joules.
- Potential energy at point B, measured in joules.
The initial kinetic energy of the particle is:
Where:
- Mass, measured in kilograms.
- Velocity, measured in meters per second.
If and
, then:
Finally, the value of the potential energy at point B is:
The value of the potential energy of the particle at point B is 85 joules.