Question

A string 2m long is used to whirl a 200 gm stone in horizontal circle at s speed of 2m/s find tension in string

Tomorrow is my paper of physics pray for me​

Answer 1

The tension in the string is 0.4 N

Solution:

• Mass m = 200g
• To convert into kilogram, divide by 1000
• Mass = 200/1000 = 0.2 kg
• Velocity 'V' = 2m/s
• Length 'L' = 2m = r

Now by using the formula of tension

T = mv^2/r

T = 0.2 x (2)^2/ 2

T = 0.2 x 4 / 2

T = 0.2 x 2

T = 0.4 N

Thus the tension in the string is 0.4 N

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Answer 2

Answer:

answer is 0.4 as t=mv2/r