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ashna
Group Title
A motor boat is rising towards N at 25 Km/hr and the water current in that region is 10 km /hr in the direction of 60° east of south . Find the resultant velocity of the boat .
 2 years ago
 2 years ago
ashna Group Title
A motor boat is rising towards N at 25 Km/hr and the water current in that region is 10 km /hr in the direction of 60° east of south . Find the resultant velocity of the boat .
 2 years ago
 2 years ago

This Question is Closed

ashna Group TitleBest ResponseYou've already chosen the best response.1
@waterineyes you know this sum ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
I don't...
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
you know some one in open study who can help me ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
I think @sauravshakya can help you here..
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
i sent him a msg .. no reply :/
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
But he is online.. Let me try..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Which chapter is this ??
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
motion in a plane.
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Yeah I think you will get help here..
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
thanks waterineyes :)
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
@rsadhvika do you know how to solve this ??
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
dw:1344771481322:dw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Here A and B are the vectors.. A is representing the boat and B is representing Water...
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
okay .. understood !
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Now We have to find Resultant first.. For that we first make our figure look like parallelogram..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Wait I draw the figure more clearly for you..
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
its okay .. i can understand :)
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
dw:1344771854805:dw
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
dw:1344771963782:dw
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
is that the parellelogram we need ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Now make it look like parallelogram: dw:1344771989674:dw Getting this ??
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
yeah got it !
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Now can you draw diagonal of the parallelogram ??
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
dw:1344772085729:dw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Great.. This is the resultant of A and B vector..
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
what is theta here ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
You must mention the direction also..
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
what direction ? direction of vector ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
dw:1344772213529:dw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Since boat has higher velocity then boat will go in upward direction.. Getting ??
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
yeah ..and if lower velocity , down ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Yeah that will depend upon velocity of water..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Have you studied about the formula: \[Resultant (R)= \sqrt{A^2 + B^2 + 2AB \cos(\theta)}\]
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
yeah i have !
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Here A is just velocity of boat that is : 25 and B is just velocity of water that is : 10 But you have to find theta first.. Right ??
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
yeah .. how do we find theta ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Theta is basically angle between the two vectors A and B.. Here what is the angle between A and B.. Can you locate on the drawing ??
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
dw:1344772636899:dw
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
i don't know !
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
dw:1344772698399:dw
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
That is the angle between A and the resultant.. We have to locate angle between A and B..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Don't worry @ashna I draw it..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
dw:1344772809427:dw Getting?? That is the angle between A and B..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Can you find its value ??
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Make a try..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Great.. A medal for you..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
Can you tell cos(120) = ??
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
yea .. cos (90+30)  sin 30  1/2 correct ?
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
I wish I could give you more medals.. Yes that is very correct.. Now can you use that formula ??
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
okay i'll try !
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
There is no need to go fast.. I can wait.. Just take your time and post your answer here..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
I think this site is going to be down soon..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
If my reply does not come @ashna then don't worry . Just post the answer or doubt here I will check it later on..
 2 years ago

waterineyes Group TitleBest ResponseYou've already chosen the best response.1
What happened @ashna
 2 years ago

ashna Group TitleBest ResponseYou've already chosen the best response.1
okay .. now i can type .. some net problem i guess.. sorry for the delay .. i got square root 475 !
 2 years ago
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