b Two people are pulling a sled (sledge) across a snowfield. Figure 3 shows a view from above. The pulling forces are 80N and 60 N. The forces act at 30° and 20° to a reference line (showed dashed). The sled is moving with constant velocity. Deduce the magnitude and direction of the friction force acting on the sled. Draw a scale diagram in the space below Figure 3. sled 30° 20° 60 N 80 N Figure 3 (not to scale)
