Physics
posted by Trevor .
An object is swinging from a point that is horizontal compared to the lowest point the object will reach (where the rope is vertical). If the length of the rope is 2 meters and the mass of the object is 30 kg, what is the tension in the rope at the bottom of the swing?
Need Step by step solution!

Physics 
Count Iblis
Drop in potential energy from horizontal to vertical orientation is
2 meters *m* g
This must equal 1/2 m v^2, because velocity is zero when the rope is horizontal. This means that:
v^2 = 4 meters*g >
v^2/(2meters) = 2 g is the centripetal acceleration.
Newton's second law:
F = m a
applied to the object gives:
mg + T = 2mg
where T is the tension and we take the positive direction to be upward.
The tension is thus T = 3 m g. 
Physics 
Trevor
Is it vertical vs. Horizontal energy to get the Acceleration?

Physics 
Trevor
NVM you are relating GPE for Horizontal to KE of Horizontal.
Respond to this Question
Similar Questions

Physics
A light rope passing over a frictionless pulley connects two objects. One object has a mass of 10kg. The tension in the rope is 90N. Calculate the acceleration and the mass of the second object. Object 1 FgFt = ma 100  90  10*a … 
Physics
A light rope passing over a frictionless pulley connects two objects. One object has a mass of 10kg. The tension in the rope is 90N. Calculate the acceleration and the mass of the second object. Object 1 FgFt = ma 100  90  10*a … 
physics
a rope can withstand 300N of force before snapping. assume that a 4 kg object is attached to the rope and is being spun in a horizontal circle with a .5 m radius. Find the velocity of the object when the rope breaks. 
physics
A pendulum consists of an object of mass m = 1.2 kg swinging on a massless string of length l = 259 cm. The object has a speed of 2.4 m/s when it passes through its lowest point. What is the greatest angle with the vertical that the … 
Physics
A pendulum consists of an object of mass m = 1 kg swinging on a massless string of length l = 258 cm. The object has a speed of 1.6 m/s when it passes through its lowest point. What is the greatest angle with the vertical that the … 
Physics
A 14.9kg object hangs in equilibrium at the end of a rope (taken as massless) while a wind pushes the object with a 67.7N horizontal force. Find the tension in the rope and the rope\'s angle from the vertical. The acceleration due … 
physics
calculate the mass of an object attached at the end of the rope 7.5m long suspended from a fixed support and made to swing.suppose the speed of the object at its lowest point of the swing is 3m/s and the tension in the rope at the … 
Physics
an object weighing 200 lbs. and suspended by a rope A is pulled asisde by the horizontal rope B and held so that rope A makes an angle of 30 degree with the vertical. find the tensions in rope A and B. 
mechanics
an object weighing 303N and suspended by rope A is pulled aside by the horizontal rope B makes an angle of 35degree with the vertical. find the tension in rope A and rope B 
science
Q.4a) an object is tied to a rope and moves in a horizontal circle. The maximum tension in the rope is 100N. The object has a mass of 37kg and the rope is 1.4m long. what is the angle of the rope with respect to the Horizontal?