Friday

March 27, 2015

March 27, 2015

Posted by **Laureana** on Sunday, August 4, 2013 at 10:44am.

- Physics -
**Elena**, Sunday, August 4, 2013 at 5:55pmUpward motion of the weight

h =v₀t-gt²/2

v= v₀ -gt

v=0 => v₀ =gt => t = v₀ /g =9/9.8 =0.92 s

h = v₀²/2g =9²/2•9.8 =4.13 m

Let h₀ is the height of helicopter when the weight began its motion. Then

for downward motion of the weight

h₀+h =gt₀²/2

t₀ =sqrt{2(h₀+h)/g}

====

t₁=2t+ t₀ = 2v₀/g + sqrt{2(h₀+h)/g} =18 s

sqrt{2(h₀+h)/g} =18 - 2v₀/g

Square this equation, substitute the given data and calculated height h, and solve for h₀

h₀ = 1280 m

During the motion of the weight, the helicopter moved upwards by the distance

h₁=v₀t₁ = 9•18= 162 m

Therefore,

H = h₀ + h₁ =1280+ 162 = 1442 m .

- Physics -
**Henry**, Sunday, August 4, 2013 at 7:48pmh1 = Vo*t + 0.5g*t^2

h1 = -9*18 + 4.9*18^2 = 1426 m Above

ground when bag was released.

h2 = 9*18 = 162 m.. Above point of release.

h = 1426 + 162 = 1588 m. Above ground.

**Answer this Question**

**Related Questions**

Physics - A passenger in a helicopter traveling upwards at 17 m/s accidentally ...

Physics - A passenger in a helicopter traveling upwards at 18 m/s accidentally ...

Physics - A passenger in a helicopter traveling upwards at 19 m/s accidentally ...

Physics - A helicopter is ascending vertically with a speed of 3.00 m/s. At a ...

Physics - A helicopter is lifting off from the ground and is moving vertically ...

Physics - A helicopter is lifting off from the ground and is moving vertically ...

physics - A helicopter is ascending vertically with a speed of 5.03m/s . At a ...

Maths/ Calc - Supplies are dropped from a stationary (not moving up or down) ...

Math/ Calculus Help1 - Supplies are dropped from a stationary (not moving up or ...

Physics - A helicopter carrying Dr. Evil takes off with a constant upward ...