Ask Experts Questions for FREE Help !
Ask
    Truey's Avatar
    Truey Posts: 1, Reputation: 1
    New Member
     
    #1

    Jan 29, 2014, 04:30 AM
    Physics
    Hailstones with an average mass of 4g fall vertically and strike a flat roof at 12 metres per second.In a period of 5 minutes 6000 hailstones fall on each square metre of roof and rebound vertically at 3 metres per second. Calculate the force on the roof if it has an area of 30 square metres.
    Curlyben's Avatar
    Curlyben Posts: 18,514, Reputation: 1860
    BossMan
     
    #2

    Jan 29, 2014, 04:32 AM
    What do YOU think.
    While we're happy to HELP we wont do all the work for you.
    ebaines's Avatar
    ebaines Posts: 12,131, Reputation: 1307
    Expert
     
    #3

    Jan 30, 2014, 06:51 AM
    This problem is based on the equivalence of impulse and change of momentum, and involves an assumption that the force on the roof is equal to the weighted average of force per unit time. So you're really calculating the average force on the roof. Post back with your attempt at solving this and we'll check it for you.

Not your question? Ask your question View similar questions

 

Question Tools Search this Question
Search this Question:

Advanced Search

Add your answer here.


Check out some similar questions!

Physics [ 1 Answers ]

A thread of mercury of length 15cm is used 2 trap some air in a capillary tube with uniform cross sectional area & closed at one end. With the tube vertical & the open end upper most,the length of the trapped air column is 20cm. Calculate,the length of the air column when the tube is held...

Physics [ 1 Answers ]

In an action movie, a helicopter with the heroes on board is seen escaping from an underground bunker inside a volcano. The Volcano chimney is 605m tall. The helicopter is moving up with a constant acceleration of 10m/s^2. the villain realized of this and shoots the helicopter with a cannon. If it...

Physics [ 3 Answers ]

In an action movie, a helicopter with the heroes on board is seen escaping from an underground bunker inside a volcano. The Volcano chimney is 605m tall. The helicopter is moving up with a constant acceleration of 10m/s^2. the villain realized of this and shoots the helicopter with a cannon. If it...


View more questions Search