College Physics with MasteringPhysics 7th Edition by Jerry Wilson,Anthony Buffa,Bo Lou

تمرين 16

A solid cylindrical 10-kg roll of roofing paper with a radius of 15 cm, starting from rest rolls down a roof with a 20° incline (Fig.). (a) If the cylinder rolls 4.0 m without slipping, what is the angular speed about its center when leaving the roof (b) If the roof edge of the house is 6.0 m above level ground, how far from the edge of the roof does the cylindrical roll land (Figure not to scale.)

FIGURE Watch out below See Exercise.