, the forces resisting the motion, including kinetic friction and air resistance, total 635 N. The mass of the bobsled and its riders is 275 kg. (a) What is the Magnitude of the force propelling the bobsled forward? (b) What is the magnitude of the net force that acts on the bobsled?
2006-10-16 07:46:31 · 2 answers · asked by meggers 3 in Science & Mathematics ➔ Physics
b) The net force is given by Fn=m*a
a) The propelling force is Fn + 635 N
(Adding in any vertical forces is not what is asked for.)
2006-10-16 12:53:16 · answer #1 · answered by sojsail 7 · 0⤊ 0⤋
Total Force = grav force - kinetic friction force - air resistance force
friction force + air resistance = 635 N
Total Force = m*a = 275 kg * 3.07 = 844.25 N
grav force = 844.25 + 635 = 1479.25 N
the net force acting on the bobsled = 844.25 N
2006-10-16 15:32:00 · answer #2 · answered by resurrection_of_t_o 2 · 0⤊ 0⤋