Three blocks with masses m, 2m and 3m ar...

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

6mg

zero

2mg

3 mg

Text Solution

Verified by Experts

The correct Answer is:

The speed of mass is constant so the acceleration will be zero .
`F= ma `
`F = m xx 0 = 0`

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