Im pretty sure burning paper
its either that or melting iron but im 90 percent sure its paper burning
Answer:
Explanation:
The sandpaper block did not move because the forces of friction and gravity were balanced.
Any force of 29.4 Newtons or greater can do it.
Because the elevator moves at a constant speed, it's in equilibrium and the net force acting on it is zero. Then the tension in the cable exactly equals the magnitude of the elevator's weight, which is
(3000 kg) (9.80 m/s²) = 29,400 N
