Question

a block of mass 2 kg is tied with the Rope is going down under the force of gravity of 20 Newton how much force is required by the hand to stop the motion of the block ​

Answer 1

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11th

Physics

Laws of Motion

Dynamics of Circular Motion

A block of mass 2 kg is tie...

PHYSICS

A block of mass 2 kg is tied to a string of length 2 m, the other end of which is fixed. The block moved on a smooth horizontal table with constant speed 5 m/s. Find the tension in the string.

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ANSWER

Answer is B.

In this case, the centripetal force is provided by tension.

That is, T=

r

mv

2

=

2

2×5

2

=25N.

Please refer the figure below.

Hence, the tension in the string is 25 N.

solution

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