Platform of height , Physics

Assignment Help:

A tank is filled up to a height 2H WITH A LIQUID and is placed on a platform of height H from the ground .the distance x from the ground where a small hole is punched to get maximum range R is?

Ans) let the distance be x.

then range(R)=2 . [(3H-x).x]^1/2 ......................... [ since t=(2x/g)^1/2 and v={2g(3H-x)}^1/2  ]

 R^2 = 4.(3Hx-x^2)

 for R to be max...R^2 should be max.

hence differentiating and putting d(R^2)/dx=0.
we get 3H-2x=0

x=3H/2.


Related Discussions:- Platform of height

Determine the refractive index of glass, A glass sphere of radius 15 cm has...

A glass sphere of radius 15 cm has a small air bubble at a distance of 6 cm from its centre. When viewed normally along its diameter from the nearest side, the bubble seems to be 7

What are longitudinal waves, If the particles of a medium vibrate in the di...

If the particles of a medium vibrate in the direction of wave motion the wave is known as longitudinal. a)      It goes in the form of compression and rarefaction. b)      A

Measurement, How do we measure the height of a house

How do we measure the height of a house

Current density between the plates, 2. The dipole in problem is removed and...

2. The dipole in problem is removed and the space between plates is filled with Cu of conductivity σ (look up the value). (a) Derive an expression for the current density betwee

Motion angular velocity, A scooterist is racing at a speed of 72 km per hou...

A scooterist is racing at a speed of 72 km per hour. If the radius of the wheel is 20 cm, find the angular speed of the wheels.   Ans) 72kmph=20m/s 20cm=0.2m; v=rw w=v/r w=20/0

Relation among electric force and electric field, In an electric field   a ...

In an electric field   a charge (Q) experiences a force F = QE. If charge is positive then force is directed in the direction of field whereas if charge is negative force acts on i

Projectile motion - distance from the launch point, A projectile is launche...

A projectile is launched from zero height with an initial angle, θ, above the horizontal and with an initial velocity, vi. a. Show that the range of the projectile the distance

How many moles does ethane have, Sample of ethane gas (molar mass & 30.1 g/...

Sample of ethane gas (molar mass & 30.1 g/mol) occupies 1.2 x 10 -2 m3 at 46°C and 2.4 x 105 Pa. How many moles of ethane are present in the sample? What is the mass of the

Interferometer, working and construction of interferometer

working and construction of interferometer

What is magnetostriction?, If we have to strain a ferromagnetic crystal alo...

If we have to strain a ferromagnetic crystal along certain direction, we would change the inter atomic spacing not only along this direction but also in other direction. And hence

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd