BMAT Help

Malaikai

Can someone please help with BMAT 2022 section 2 question 20 and 24?

Reply 1

BankaiGintoki

Original post by Malaikai

Can someone please help with BMAT 2022 section 2 question 20 and 24?

Reply 2

BankaiGintoki

Original post by Malaikai

Can someone please help with BMAT 2022 section 2 question 20 and 24?

Thank you so much🙏🏼

Original post by Malaikai

Thank you so much🙏🏼

A slightly simpler way to start the first one is to note that the area of PST is 20 (1/4 area scale factor) so
x(x - 4)/2 = 20
then solve using the quadratic formula as per the previous post.

Reply 5

mqb2766

Also for the second one, the length of the common radius is irrelevant and the area ratio is
1 : 4*sin(45) / 3*sin(60)
= ...

(edited 6 months ago)

Reply 6

Malaikai

Can someone please help with BMAT 2022 section 2 question 23? Thank you

Reply 7

mqb2766

Original post by Malaikai

Can someone please help with BMAT 2022 section 2 question 23? Thank you

What is the EPE of a spring? Then consider a second one which is extended halfway but stores twice as much energy, so the spring constant must be ....