A 80 kg parent and a 20 kg child meet at the center of an ice rink. They place their hands together and push. The parent pushes
1 answer:
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Answer:
6.91 Hz
Explanation:
Volume of the cube
= (1.5 x 10⁻² )³m³
= 3.375 x 10⁻⁶ m³
mass of the cube
= 3.375 x 10⁻⁶ x 8920 ( 8.92 g / cm³ = 8920 kg/m³ )
m = 30.105 x 10⁻³ kg
Spring stretches by 2.65 x 10⁻² m due to a force of 1.5 N.
If k be the force constant
k x = F
K x2.65 x 10⁻² = 1.5
k = .566 x 10² N / m
Now frequency of oscillation for spring - mass system is given by
n =
=
n = 6.91 Hz
Answer:
Explanation:
Given
Train travels towards south with a velocity if
Rain makes an angle of with vertical
If an observer sees the drop fall perfectly vertical i.e. horizontal component of rain velocity is equal to train velocity
suppose is the velocity of rain with respect to ground then
Therefore velocity of rain drops is 27.36 m/s
