A 8.50-kg object is hung from the bottom end of a vertical spring fastened to an overhead beam. The object is set into vertical
oscillations having a period of 1.70 s. Find the force constant of the spring
2 answers:
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We have the equation of motion , where s is the displacement, a is the acceleration, u is the initial velocity and t is the time taken.
Here displacement = 135 m, Initial velocity = 0 m/s, acceleration = 9.81
Substituting
A box falls out of a stationary helicopter hovering 135 m above the ground will take 5.25 seconds to reach the ground.
To solve the problem it is necessary to refer to the definition of entropy.
Entropy is defined aso
Where,
Heat exchange
T = Temperature
Since the heat exchange is conserved and it is an isothermal process where the temperature remains constant the change in entropy remains the same, ie (Reamins same)
Therefore the correct answer is C.