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# Mechanics Help watch

1. Hi, I've been given some prepatory mechanics problems by my university and I'm struggling with a few of them. Any help would be greatly appreciated.
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2. (Original post by Firefox23)
Hi, I've been given some prepatory mechanics problems by my university and I'm struggling with a few of them. Any help would be greatly appreciated.
It would help if you'd post the actual problem...
3. (Original post by Hydeman)
It would help if you'd post the actual problem...
Sorry I didn't notice there was an error with the attachments, I'll try again
4. (Original post by Hydeman)
It would help if you'd post the actual problem...
Questions are now attached

5. do a diagram like this one ?
6. (Original post by Firefox23)
Hi, I've been given some prepatory mechanics problems by my university and I'm struggling with a few of them. Any help would be greatly appreciated.
the bear gave you a hint on the first question
for more solved examples look at this link

the second question is very standard but I do not have the time at present to discuss the solution on line as this is very long.
Again until somebody helps you look at some suitable solved examples in this link
(dynamics section)
7. (Original post by the bear)

do a diagram like this one ?
This is what I have drawn, I thought that the relative velocity should be directed North? Then I used sine and cosine rules to try and find the bearing but the answer I get isn't correct it should be 8.13 degrees west of North
8. (Original post by Firefox23)

This is what I have drawn, I thought that the relative velocity should be directed North? Then I used sine and cosine rules to try and find the bearing but the answer I get isn't correct it should be 8.13 degrees west of North
the resultant velocity ( velocity with respect to the ground ) has to point north. the other two velocities must be nose-to-tail to produce this.

the 300 must be pointing slightly anticlockwise from North
9. (Original post by the bear)
the resultant velocity ( velocity with respect to the ground ) has to point north. the other two velocities must be nose-to-tail to produce this.

the 300 must be pointing slightly anticlockwise from North
Like this?
10. (Original post by Firefox23)
Like this?
the wind is correct.... the airspeed must be NOSE to TAIL with the wind.
11. (Original post by the bear)
the wind is correct.... the airspeed must be NOSE to TAIL with the wind.
How's this?

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