Q. A long pole is used to lift a window. If a vertical lift of 85 N is needed to raise the window, what force must be exerted along the pole? Assume the pole makes an angle of 49° with the vertical wall.
Q. A 11 g bullet is fired into a 12 kg wood block that is at rest on a wood table. The block, with the bullet embedded, slides 5.0 {rm cm} across the table. The coefficient of kinetic friction for wood sliding on wood is 0.20.