21 The wheel in Figure 2.76 rolls with- out slipping and maintains contact with the ground. The pin-connected rod has a width of 10cm and also maintains con- tact with the ground. Find the angle that the rod makes with the ground when the wheel has rotated 245° in the counter- clockwise direction from the configura- tion shown in Figure 2.76. (answer: the angle is 72°.) 0.75m - 1.75m 33.2 Im-

21 The wheel in Figure 2.76 rolls with- out slipping and maintains contact with the ground. The pin-connected rod has a width of 10cm and also maintains con- tact with the ground. Find the angle that the rod makes with the ground when the wheel has rotated 245° in the counter- clockwise direction from the configura- tion shown in Figure 2.76. (answer: the angle is 72°.) 0.75m - 1.75m 33.2 Im-