Say you want to make a sling by swinging a mass M of 1.9 kg in...
Say you want to make a sling by swinging a mass M of
1.9 kg in a horizontal circle of radius 0.030 m, using a string of
length 0.030 m. You wish the mass to have a kinetic energy of 14.0
Joules when released. How strong will the string need to be? (How
much tension will there be in the string?)
Homework Answers
Here Centripetal force = mv^2/r
= 0.5mv^2 *2/r
= KE*2/r
= 14*2/0.030 = 933.33 N
Gravitational force = mg = 1.9*9.8= 18.62 N
Tension required = sqrt(933.33^2+18.62^2)
= 933.5 N answer
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The figure below shows a ball of mass m=1.9 kg which is
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circle. Only gravity and the tension in the string act on the ball.
If the velocity of the ball at point A is v0=10.4 m/s, what is the
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connected to a string of length L=1.5 m and moves in a vertical
circle. Only gravity and the tension in the string act on the ball.
If the velocity of the ball at point A is v0=10.4 m/s, what is the
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The figure below shows a ball of mass m=1.9 kg which is connected to a...
The figure below shows a ball of mass m=1.9 kg which is
connected to a string of length L=1.5 m and moves in a vertical
circle. Only gravity and the tension in the string act on the ball.
If the velocity of the ball at point A is v0=10.4 m/s, what is the
tension T in the string when the ball reaches the point D?
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