Q$2$: $($a$)$ The coefficient of static friction between the $3\mathrm{.}00$ Kg crate and the

$35\mathrm{.}0$ deg incline of Figure $2$ is $0\mathrm{.}300.$ What minimum force vec$($F$)$ must

General Physics I

Due Date: Monday, November $25^($nd $)$ at $11$:$30$PM

Figure $2$: Problem $2$a

be applied to the crate perpendicular to the incline to prevent the

crate from sliding down the incline.

$($b$)$ A $3\mathrm{.}00$ Kg steel ball strikes a massive wall at $10\mathrm{.}0($m$)/($s$)$ at an angle

$\backslash$theta $=60\mathrm{.}0$deg with the place of the wall. It bounces off the wall

with the same speed and angle, as in Figure $3.$ If the ball is in

contact with the wall for $0\mathrm{.}200$ seconds, what is the average force

exerted by the wall on the ball $($Hint: Think Impulse$).$