Task#$10$

A block $($mass $=15kg)$ is being pulled on a rough horizontal surface by a person ysing a rope. The rope makes an angle $=20$ with the horizontal. As the result of constant force $T=175N$ applied by the person, the block moves with constant acceleration. The coefficient of friction & between the block and the surface is $0\mathrm{.}42.$

Determine the acceleration of the block in the $x($horizontal$)$ direction.

Determine the work done by the force if the blockis moved a distance $s=2\mathrm{.}4m.$

$$ Theory: $W=F**s,F=ma,F_f=F_N$

$a-\frac{k}{m}$

Assumptions:

neglecting

exterial end

ioinine, its, nerton reastics,