A block of mass 1kg moves under influence of external force on a rough surface.At some instant it has a speed of 1m/s and an acceleration of 1m/s2 due north the force acting on it is f.find f and its direction.
2006-08-01 00:32:40 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Physics
The force of friction acts opposite to the dir of motion or tendency of motion.Hence force f acts due west.But the magnitude of force cannot be found.
2006-08-01 00:36:42 · answer #1 · answered by vichu_harrypotter 2 · 0⤊ 3⤋
If it is accelerating due north, then the _sum_ of the external forces upon it is one newton due north. The external force f is greater than one newton because it has to oppose the friction of the block as it moves over a rough surface, but we don't know how much greater because the coefficient of friction is not specified.
2006-08-01 03:00:04 · answer #2 · answered by Mr. E 5 · 0⤊ 0⤋
f depends upon the coefficient of friction.
2006-08-01 02:38:38 · answer #3 · answered by ag_iitkgp 7 · 0⤊ 0⤋