A 0.358 kg particle slides around a horizontal track. The track has a smooth, vertical outer wall forming a circle with a radius
1 answer:
Answer:
The energy loss due to friction in one revolution is 4.92 J.
Explanation:
Given that,
Mass of particle = 0.358 kg
Radius = 1.66 m
Initial speed =8.19 m/s
Final speed = 6.29 m/s
We need to calculate the kinetic energy
Using formula of kinetic energy
Put the value into the formula
Hence, The energy loss due to friction in one revolution is 4.92 J.
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Answer:
The gravitational force is related to the mass of each object.
The gravitational force is an attractive force.
Explanation:
Gravitational force is a long range force of attraction between any two masses.
Mathematically given as :
where:
are the masses
r= distance between the center of mass of the two objects.
G= gravitational constant =
From the above relation of eq. (1) it is clear that,
Gravitational force is inversely proportional to the square of the distance and directly proportional to the masses.
The mass of an object is independent of its size due to the fact that density may vary for different objects.
The force of gravity varies with height as:
where:
gravity at height
of the center of mass of the object from the center of mass of the earth.
and we know that force:
where: m= mass of the object.
Answer:
E_{k2}=2660 [J] kinetic energy.
Explanation:
The energy in the initial state i.e. when the rollercoaster is at the top is equal to the energy in the final state i.e. when it is at the bottom of the hill.
These states can be represented by means of the second equation.
Since the rollercoaster is located in the bottom of the hill where the potential energy level is zero, therefore there is only kinetic energy in the second state.