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# Mechanics Question watch

1. A particle P of mass 5kg lies on an inclined plane where sin x=3/5. Particle Q is connected to a particle Q of mass 4kg by a light inextensible string which lies along a line of greatest slope of the plane and passes over a smooth peg. The system is held at rest with Q hanging vertically 2m above a horizontal plane. The system is released from rest.B: Assuming p does not reach the peg find to 3 significant figures(i) initial acceleration of q(ii) how long it takes for q to hit the horizontal plane(iii) total distance that p moves up the plane
2. (Original post by jamesw5555)
A particle P of mass 5kg lies on an inclined plane where sin x=3/5. Particle P is connected to a particle Q of mass 4kg by a light inextensible string which lies along a line of greatest slope of place and passes over a smooth peg. The system is held at rest with Q hanging vertically 2m above a horizontal plane. The system is released from rest.B: Assuming p does not reach the peg find to 3 significant figures(i) initial acceleration of q(ii) how long it takes for q to hit the horizontal plane(iii) total distance that p moves up the plane
First draw your triangle where sinx=3/5 and find values for cosx and tanx
Resolve vertically down and Up the plane, use F=ma, don't forget there's tension in the string.
Find acceleration of q

Use SUVAT to find time for q to hit horizontal plane

Tension in string for p is now 0 since the string connecting p and q has gone loose since q has hit the ground use F=ma again and use SUVAT to find the extra midgey bit of distance p has travelled then add 2 to that value and you have an answer

what does line of greatest slope of place mean?
i'm assuming that the slope is smooth since there isn't any coefficient of friction given

Zacken TeeEm Student403

i may have made a big mistake pls help this person
3. (Original post by jamesw5555)
A particle P of mass 5kg lies on an inclined plane where sin x=3/5. Particle Q is connected to a particle Q of mass 4kg by a light inextensible string which lies along a line of greatest slope of the plane and passes over a smooth peg. The system is held at rest with Q hanging vertically 2m above a horizontal plane. The system is released from rest.B: Assuming p does not reach the peg find to 3 significant figures(i) initial acceleration of q(ii) how long it takes for q to hit the horizontal plane(iii) total distance that p moves up the plane
Draw a diagram, try some working, do something instead of just writing the question down verbatim on here. Show us your working so we can help you.
4. (Original post by thefatone)
First draw your triangle where sinx=3/5 and find values for cosx and tanx
Resolve vertically down and Up the plane, use F=ma, don't forget there's tension in the string.
Find acceleration of q

Use SUVAT to find time for q to hit horizontal plane

Tension in string for p is now 0 since the string connecting p and q has gone loose since q has hit the ground use F=ma again and use SUVAT to find the extra midgey bit of distance p has travelled then add 2 to that value and you have an answer

what does line of greatest slope of place mean?
i'm assuming that the slope is smooth since there isn't any coefficient of friction given

Zacken TeeEm Student403

i may have made a big mistake pls help this person
too late ...
Zacken needs

...learning practice
...teaching practice
...post count
...reputation

(before I do)

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