Three blocks with masses m, 2m and 3m are connected by strings, as shown in the figure. After an upward force F is applied on block m, the masses move upward at constant speed v. What is the net force on the block of mass 2m? (g is the acceleration due to gravity)

Question

Three blocks with masses m, 2m and 3m are connected by strings, as shown in the figure. After an upward force F is applied on block m, the masses move upward at constant speed v. What is the net force on the block of mass 2m? (g is the acceleration due to gravity) (A) 6 mg (B) 0 (C) 2 mg (D) 3 mg

Tardigrade Admin · Accepted Answer

As block of mass 2m moves with constant velocity so net force on it is zero.

Q. Three blocks with masses m, 2m and 3m are connected by strings, as shown in the figure. After an upward force F is applied on block m, the masses move upward at constant speed v. What is the net force on the block of mass 2m? (g is the acceleration due to gravity)

6 mg

0

2 mg

3 mg

As block of mass 2m moves with constant velocity so net force on it is zero.

Q. Three blocks with masses $m$ , $2 m$ and $3 m$ are connected by strings, as shown in the figure. After an upward force $F$ is applied on block $m$ , the masses move upward at constant speed $v$ . What is the net force on the block of mass $2 m$ ? (g is the acceleration due to gravity)