Tension on a String, Centripetal Acceleration
Not what you're looking for?
4. A boy whirls a ball on a string 1.0 m long in a horizontal circle at 50 rpm. If the mass of the ball is 0.22 kg, what is the tension in the string?
5. A jetliner traveling at 600 km/h is turning in a circle of radius 2.5 km. What is its centripetal acceleration?
6. A 4.0-kg object is lifted 1.5 m. (a) How much work is done against the Earth's gravity? (b) Repeat if the object is lowered instead of lifted
Purchase this Solution
Solution Summary
The tensions on a string using centripetal acceleration are determined.
Solution Preview
4. A boy whirls a ball on a string 1.0 m long in a horizontal circle at 50 rpm. If the mass of the ball is 0.22 kg, what is the tension in the string?
Solution:
Tension must be equal to the cetrepital force: T=ma, where a is a centripetal acceleration a=v^2/R.
So we have:
R=1.0 meter
to get speed you need to ...
Purchase this Solution
Free BrainMass Quizzes
Variables in Science Experiments
How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.
Classical Mechanics
This quiz is designed to test and improve your knowledge on Classical Mechanics.
The Moon
Test your knowledge of moon phases and movement.
Basic Physics
This quiz will test your knowledge about basic Physics.
Intro to the Physics Waves
Some short-answer questions involving the basic vocabulary of string, sound, and water waves.