8. Centripetal Forces & Gravitation
Centripetal Forces
8. Centripetal Forces & Gravitation Centripetal Forces
16PRACTICE PROBLEM
A child is playing with a yo-yo, which has a mass of 0.5 kg and is attached to a string that is 60 cm long. The child has set the yo-yo into motion by swinging it in a vertical circle. When the yo-yo is at an angle of 45° from the highest point on the circle, the tension in the string is measured to be 25 N. What is the speed of the yo-yo at this instant? Assume that there is negligible air resistance and no loss of energy due to friction.
A child is playing with a yo-yo, which has a mass of 0.5 kg and is attached to a string that is 60 cm long. The child has set the yo-yo into motion by swinging it in a vertical circle. When the yo-yo is at an angle of 45° from the highest point on the circle, the tension in the string is measured to be 25 N. What is the speed of the yo-yo at this instant? Assume that there is negligible air resistance and no loss of energy due to friction.