Quantum mechanics, Mechanical Engineering

A ball is dropped from a height .If it takes0.200 second to cross the last 6.00 m before hitting the ground ,find the height  from which it was dropped .

Ans) We need to find H

Using second eqn of motion:

6=0.2u-5(0.04).............................u is velocity at h=6m

u=31m/s

Conserving energy:

mgh=0.5m(31)2.......................................Datum line for P.E is at 6 m from ground. h= H-6

=>h=48.05m

=>H=54.05m.

Posted Date: 3/8/2013 6:27:54 AM | Location : United States





we consider a ball it is dipped from a height equal to square of the intiial distance by 2 multiplide with g(9.8),

i.e ans is 1.83 metres.

Posted by | Posted Date: 3/8/2013 6:28:27 AM


Related Discussions:- Quantum mechanics, Assignment Help, Ask Question on Quantum mechanics, Get Answer, Expert's Help, Quantum mechanics Discussions

Write discussion on Quantum mechanics
Your posts are moderated
Related Questions
how does shearing failure occurs

Analyse the beam: Analyse the beam illustrated in Figure and draw the SFD, BND & thrust diagram. Situated the point of contraflexure, if any. Figure Solution

IN CASE OF WILSON HARTNELL GOVERNOR THERE TWO MAIN SPRINGS AND THERE ARE ONE AUXILIARY SPRING. AND NATURE OF SPRINGS ARE TENSION ALWAYS HOW IT CAN POSSIBLE? WHEN SLEEVE WILL MOVE D

State and define the bending equation and mention it''s units and derive it

By operation of the distillation columns you are often interested to maintain output despite fluctuations in the composition, ex. feed composition and feed flow. One possible actua

Find out the impact-force: A mass of 3 kg ball freely falls from a height of 2 metres on an anvil, & rise 0.5 metre after the blow. If the duration of impact is (1/50) th   of

LASER WELD OVERLAY I CLADDING This process brings the metal surface to a substantially higher temperature than in the heat treating process and results in a thin molten surface

Resulting structure of steel: Heat treatments as mentioned below are given to thin steel strips for which TTT diagram is as shown in Figure 19. What will be the resulting stru

Q. Show the Procedure of Compute flange stresses? Compute flange stresses and the actual bolt stress using: - COLT values for gasket seating stress, ‘y' and the gasket facto

Flight of the Bumblebee Railroad train T a leaves station A at a uniform speed of 30mph toward station B. Train Tb leaves station B at a uniform speed of 20mph toward station