An object of mass m is hanging by a string from the roof of a car. We want to compare the tension in the string to the weight of the object under various conditions. Which statements are true?
1. If the car is moving forward, and speeding up, the tension in the string is less than the object's weight.
2. if the car has left the ground going over a bump, the tension in the string is greater than the object's weight.
3. If the car is turning to the right, the tension in the string is less than the object's weight.
2006-12-13 17:38:22 · 2 answers · asked by WMC 1 in Science & Mathematics ➔ Physics
1 - F
2 - Depends on when you measure the tension. While the car is going up, the tension will be more. While the car is falling, the tension will be zero.
3 - F
2006-12-13 17:46:25 · answer #1 · answered by daedgewood 4 · 1⤊ 0⤋
In all the cases the state of the stone has to be changed.
For that a force is always necessary on the object. That can be given only by the tension in the string which should be more than the weight of the object.
2006-12-13 18:16:23 · answer #2 · answered by Pearlsawme 7 · 0⤊ 0⤋