Problem $12\mathrm{.}069-$ A block sliding inside a slot

A $0\mathrm{.}5-kg$ block $B$ slides without friction inside a slot cut in arm $OA$ which rotates in a vertical plane. The rod has a constant angular acceleration ${}^{}=10ra\frac{d}{s^2}.$ Know that when $=45$ and $r=0\mathrm{.}8m,$ the velocity of the block is zero.

Draw the free$-$body diagram of block $B.$

The free$-$body diagram of block $B$ is

Force $($i$)$

Comment

Force

Indicates required fields

Name of Force $*$

Select

Weight of the Block $(W=mg)$

Frictional Force $(F_f)$

Normal Force $($ N $)$

Away