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Arthur Bon Zavi

Member

Registered: 2011-10-30

Posts: 121

All Mechanics 1 (M1) doubts

http://www.xtremepapers.com/CIE/Interna … _qp_43.pdf

Question (3) (i) please.

Last edited by Arthur Bon Zavi (2011-11-02 03:57:04)

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In the heart of the night, when it's dark in the lights; I heard the loudest voice - a gun shot on the floor.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,623

Re: All Mechanics 1 (M1) doubts

hi Arthur Bon Zavi

Resolve Ps weight into mgcos60 parallel to the slope and mgsin60 perpendicular to the slope.

This second force is counteracted by the normal reaction of the slope.

The force down the slope gives Ps acceleration.

P:  the acceleration down the slope is g.cos60 = ½ g

Using

Q:

P:

That will give you u.

Then v = u + at

Hope that helps

Bob

Last edited by Bob (2011-11-02 04:51:21)

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob

Arthur Bon Zavi

Member

Registered: 2011-10-30

Posts: 121

Re: All Mechanics 1 (M1) doubts

I was wondering why they took 5 ms[sup]-2[/sup] instead of 10 ms[sup]-2[/sup].

This helped. Thanks man.

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In the heart of the night, when it's dark in the lights; I heard the loudest voice - a gun shot on the floor.

Bob

Administrator

Registered: 2010-06-20

Posts: 10,623

Re: All Mechanics 1 (M1) doubts

You are welcome! 

Bob

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Children are not defined by school ...........The Fonz
You cannot teach a man anything;  you can only help him find it within himself..........Galileo Galilei
Sometimes I deliberately make mistakes, just to test you!  …………….Bob