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
Convert the flow-rate from Am3/h to Sm3/h Consider a compressor (model ABC-Z4).  The compressor has a suction pressure of 3 barg, and a discharge pressure of 6 barg.  The inlet

explain capacity planning system

SHIELDED METAL ARC WELDING (SMAW) It also known as Manual Metal Arc Welding (MMAW). The heat required for welding is generated by the electric arc formed between metallic elect

Two-Phase flow In a Horizontal Pipe While working for an oil company you are asked to produce a report on a two-phase flow problem. A mixture of oil and gas is to be pumped al

Flow through pipes in series and parallel

Application of Hydrostatic sensor paver machine The Hydrostatic sensor paver machine that is used for lying bituminous Mixed material, roll-down or lean-mixed concrete, track-

sketch and discuss the uses and application of the following types of cam follower;knife edge,roller and flat ended.

Q. Design Loads and Load Combinations? The Designer shall determine the following loads and specify them on the Data Sheet. Design loads are defined and classified as follows:

Q. Show the Welding Processes and Restrictions? Welding may be performed manually, semi-automatically and or automatically using any process or combination of processes accepte

Control Cables: Never bend or distort control cables. This will lead to stiff operation and premature cable failure. Rubber Parts: Beware of parts containing O-rings or oil s