???? ?????:??? ????? ???? ?????? ????????? ?? ??????? ?????? ?????? ??????? ???? ??? ??????? ?? ???? ????????? ????? ?? Wheel: The wheel is a vital early machine, such as the chariot. A wheel utilizes the legislation with the lever to reduce the drive essential to overcome friction when pulling a load. to discover this discover which the friction… Read More

??? ???? ????? ???? ????? ??? ????? ?? ??? ???? ????? ?? ????? ??????? ??? ??? ???? ???? ??????? ???????? ??? ?????? ?? ???? ???? ???? ????? ???? ???????? ??????? ??????? ???????? ?? ????? ??? ???? ?????? ???? ?????? ???? ???????? ?????? ???? ???????? ???? ??? ???? ?????? ???? . ????? ?? ????? ?? ??? ????? ??? ???? ?????? ???? ?? ????? ??? ????… Read More