اقتباس:
المشاركة الأصلية كتبت بواسطة حسن زيرو
يالا ياجماعة منتظرين الاسئلة
|
اتفضـــل السـؤال يا بشمهندس
A block placed under the head of the claw hammer as shown greaty facilitates the extraction of the nail. If a 50-lb pull on the handle is required to pull the nail , calculate the tension T in the nail and the magnitude A of the force exerted by the hammer head on the block . The contacting surfaces at A are sufficiently rough to prevent slipping
:D