Sand drops vertically at the rate of 2 kg / sec on to a conveyor belt moving horizontally with a velocity of 0.2 m / sec . Then the extra force required to keep the belt moving is

Question

Sand drops vertically at the rate of 2 kg / sec on to a conveyor belt moving horizontally with a velocity of 0.2 m / sec . Then the extra force required to keep the belt moving is (A) 0.4 N (B) 0.08 N (C) 0.04 N (D) 0.2 N

Tardigrade Admin · Accepted Answer

Force required to keep the belt moving =F F=v (d m/d t)=0.2 × 2=0.4 N

Q. Sand drops vertically at the rate of $2 k g / sec$ on to a conveyor belt moving horizontally with a velocity of $0.2 m / sec .$ Then the extra force required to keep the belt moving is

0.4 N

0.08 N

0.04 N

0.2 N

Force required to keep the belt moving $= F$
$F = v \frac{d m}{d t} = 0.2 \times 2 = 0.4 N$

Q. Sand drops vertically at the rate of 2kg/sec on to a conveyor belt moving horizontally with a velocity of 0.2m/sec. Then the extra force required to keep the belt moving is