edexcel maths m1 question?

mayesford

mayesford

mayesford

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Joined
25 Mar 2012
Posts
11
i was hopeing someone could help me with this question i have to do for homework, which is from a text book, so i do have the answer, but it is difficult.
Question - Particle A of mass 1kg is at rest 0.2m from the edge of a smooth horizontal 0.8m high table. It is connected by a light inextensible string of length 0.7m to a partcle B of mass 0.5kg. Partcle B is intially at rest at the edge of the table closest to A but then falls off. Assuming B's initial horizontal velocity to be zero find the speed with which A begins to move?

thank you
 
Thanks for your reply's , but I was wondering if can you show me the working out, and in terms of Physics i have no knowledge of potential/kinetic energy, but if it is simple suvat question which I am more familiar with, wat would the acceleration be. Thanks. Also I have some more questions but I'll post tommoro , I'll take one question at a time.
 
Thank you very much to both of you, for the help, and "I will be back". I have about 4 more questions but I'll post them tommoro ,im going asleep know ,have to go school tommoro. Cheers
 
Yea, I know the formula for two parties that jerk or collide , which is ,
m1u1+m2u2 = m1v1+m2v2, but the questions says for particle B , u = 0, but is it that only for its horizontal velocity
 
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