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Standard IX

Physics

Measuring Mass

Three blocks ...

Question

Three blocks with mass m, 2m, 3m are connected by strings, as shown in the figure (see attachment). 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?

3 mg

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6 mg

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Zero

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2 mg

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Solution

The correct option is C Zero

As the block is moving with a constant velocity, the net force on it should be zero.

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Three blocks with mass m, 2m, 3m are connected by strings, as shown in the figure (see attachment). 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?

The correct option is C Zero As the block is moving with a constant velocity, the net force on it should be zero.

The correct option is C Zero

As the block is moving with a constant velocity, the net force on it should be zero.