Q$2$: The square thread of a screw jack has a specilication of $8016$ and is $10$ raise a

load of $100$ kN $.$ The mean radius of the thrust collar is $65$ mm $.$ the coeflicient of

friction for the threads and the collar are $0\mathrm{.}1$ and $0\mathrm{.}12$ respectively. Determine: The

torque required to raise the load