# Mechanics physics angle question

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Thread starter 1 year ago
#1
Hi, Im stuck on question 5 (d) (i) (2) The angle question

https://pmt.physicsandmathstutor.com...n%203%20QP.pdf

mark scheme:
https://pmt.physicsandmathstutor.com...n%203%20MS.pdf

Can someone kindly explain where the equation a = g sin theta comes from. Thank you !
0
1 year ago
#2
(Original post by fiftythree)
Hi, Im stuck on question 5 (d) (i) (2) The angle question

https://pmt.physicsandmathstutor.com...n%203%20QP.pdf

mark scheme:
https://pmt.physicsandmathstutor.com...n%203%20MS.pdf

Can someone kindly explain where the equation a = g sin theta comes from. Thank you !
What's the force due to gravity acting down a slope? What acceleration would this cause?
0
Thread starter 1 year ago
#3
(Original post by David Getling)
What's the force due to gravity acting down a slope? What acceleration would this cause?
Thanks i got it now. W=sintheta so if i use F=ma i get sintheta = a/g. I havent come across an angle question like this before anyways thanks!!
0
1 year ago
#4
(Original post by fiftythree)
Hi, Im stuck on question 5 (d) (i) (2) The angle question

https://pmt.physicsandmathstutor.com...n%203%20QP.pdf

mark scheme:
https://pmt.physicsandmathstutor.com...n%203%20MS.pdf

Can someone kindly explain where the equation a = g sin theta comes from. Thank you !
a= g sin theta is for acceleration
its derived from a = gm (sin theta)/m gm is the weight, times sin theta, giving the force parallel to the slope acting on the rider.
all over the mass so its Force/mass = acceleration.
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