Friction force

Artículos

• Force a man must exert to pull a sled (8334)
  23 de octubre de 2024, por F_y_Q

  A man pulls a sled up a ramp using a rope attached to the front, as illustrated in the figure.
  The sled has a mass of 80 kg. The kinetic friction coefficient between the sled and the ramp is (), the angle between the ramp and the horizontal is , and the angle between the rope and the ramp is . What force must the man exert to keep the sled moving at a constant speed?