Which image represents a solenoid?
2 answers:
You might be interested in
Answer:
Acceleration of the particle is 4.45 m/s² and acceleration direction is towards the 8 kg point mass.
Explanation:
Let m₁ be 8 kg point mass and m₂ be 12 kg point mass and take direction along m₁ mass as positive x-axis. The separation between twp point masses is 50 cm. According to the problem, a particle of mass m is held between the two point masses m₁ and m₂.
Distance between m₁ and m, r₁ = 20 cm = 0.2 m
Distance between m₂ and m, r₂ = (50 - 20) cm =30 cm = 0.3 m
The particle of mass m experiences an attractive gravitational force due to both the point masses. Thus, the net force on the particle of mass m is :
F = F₁ + F₂
F₁ is acting along the positive x axis and F₂ is acting along the negative x axis.
Substitute the values of G, m₁, m₂, r₁ and r₂ in the above equation.
F = 4.45m N/kg
Acceleration of the particle = = 4.45 m/s²
The direction of acceleration of the particle is towards the 8 kg point mass.
Answer:
Explanation:
The original frequency of sound f₀
The apparent frequency of sound fa
For apparent frequency the formula is
fa = , v is velocity of jumper which increases as he goes down .
Beat frequency
= fa - f₀
=
=
since v is very small in comparison to V , velocity of sound , in the denominator , v can be neglected.
beat frequency =
v , the velocity of jumper will go on increasing as long as net force on the jumper is positive or
mg > kx where x is extension in the cord and k is its force constant . Below this point kx or restoring force becomes more than weight of the jumper and then net force on the jumper directs upwards. At this point beat frequency becomes maximum.