MECHANICS =O

[ParanoidAleveler]

http://www.xtremepapers.me/CIE/International A And AS Level/9709 - Mathematics/9709_w03_qp_5.pdf


Question 2! HOWWW? :unknown:

 

[abuhantash]

ok first CM of cone from base is 20/4 = 5 .
Then to find theta (Q) you do tanQ = 10/5 and Q=26.6 !!
(ii) not slidng ( im talking U as coef of friction)
F <= UR
mg sin Q <= U mg cos Q
U >= tan Q sooo U >= 0.5

 

[abuhantash]

BTW CM meant centre or mass!!