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A body of weight 20 N, mass 2 kg is moving in vertical circular motion with the help of a string of radius 1 m and with a velocity of 5 m/s. What is the tension in the string at the highest point?
  • a)
    30 N
  • b)
    50 N
  • c)
    20 N
  • d)
    25 N
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
A body of weight 20 N, mass 2 kg is moving in vertical circular motion...
At the highest point, the tension and the weight are in the same direction but the centrifugal force is in the opposite direction. Centrifugal force can be calculated as mv2/r = 50 N. Hence the tension = centrifugal force-weight = 30 N.
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Most Upvoted Answer
A body of weight 20 N, mass 2 kg is moving in vertical circular motion...
Given Data:
- Weight of body (W) = 20 N
- Mass of body (m) = 2 kg
- Radius of circular motion (r) = 1 m
- Velocity of body (v) = 5 m/s

Calculating Tension at the Highest Point:
- At the highest point, the tension in the string provides the centripetal force required to keep the body in circular motion.
- The tension in the string can be calculated using the equation: T = (mv^2)/r
- Substituting the given values, T = (2 * 5^2) / 1
- T = 50 N

Conclusion:
The tension in the string at the highest point is 50 N.
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A body of weight 20 N, mass 2 kg is moving in vertical circular motion with the help of a string of radius 1 m and with a velocity of 5 m/s. What is the tension in the string at the highest point?a)30 Nb)50 Nc)20 Nd)25 NCorrect answer is option 'A'. Can you explain this answer?
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