50 POINTS! pls answer
1 answer:
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Answer:
k =
b =
t =
Solution:
As per the question:
Mass of the block, m = 1000 kg
Height, h = 10 m
Equilibrium position, x = 0.2 m
Now,
The velocity when the mass falls from a height of 10 m is given by the third eqn of motion:
where
u = initial velocity = 0
g = 10
Thus
Force on the mass is given by:
F = mg =
Also, we know that the spring force is given by:
F = - kx
Thus
Now, to find the damping constant b, we know that:
F = - bv
Now,
Time required for the platform to get settled to 1 mm or 0.001 m is given by:
Answer:c
Explanation:
When both cars move towards each other with same speed , apparent frequency will be highest
this can also be explained by Doppler frequency Formula
where
as denominator is smaller than Numerator therefore apparent frequency will be greater