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AS Maths Particles

Ljm2001

9. A particle of mass 6 kg is initially at rest and is then acted upon by a force R = ai 10jN on a bearing of 300°.
a Find the exact value of a.
b Calculate the magnitude of R.
c Work out the magnitude of the acceleration of the particle.
d Find the time it takes for the particle to travel a distance of 640 m.

Reply 1

Muttley79

Original post by Ljm2001

Could you check what you have written as the force; it makes little sense.

Reply 2

Ljm2001

Original post by Muttley79

Could you check what you have written as the force; it makes little sense.

The question only says: a force R=(ai+10j)N on a bearing of 300*.
Sorry think I have just repeated myself, I'm confused as well!

Reply 3

Radioactivedecay

What exaclty are you stuck on? For the first part, find the bearing in terms of a and equate it to 300

Reply 4

Muttley79

Original post by Ljm2001

The question only says: a force R=(ai+10j)N on a bearing of 300*.
Sorry think I have just repeated myself, I'm confused as well!

I can read it now- it had some funny symboles in the original post.

Sketch it and you know the angle between North and the force is 60 degrees to the left.

Reply 5

Ljm2001

Original post by Radioactivedecay

What exaclty are you stuck on? For the first part, find the bearing in terms of a and equate it to 300

I have now done part a and b, so now just c and d

Reply 6

haleemam

Original post by Ljm2001

I have now done part a and b, so now just c and d

I'm stuck on the same question but part a. I don't understand how to find a by equating the bearing to 300. I know it's 2 months after OP but if anyone could help that would be great