طلب

[الملاك الهادى]

السلام عليكم
لوسمحت بدى اطلب حلول كتاب classical dynamics of particles and systemميكانيكا كلاسيكية
للمؤلف:
marion
واذا مش موجود بدى حل السؤالين:
الاول:calculate the graivitation potential due to athin rod of length l and mass m at adistance r from the center of the rod and in adirection perpendicular ti the rod
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الثانى:apoint mass m is adistance d from the nearest and of athin rod of mass m and length l along the axis of the rot find the gravitational force exerted on the point mass by the rod????