A string is hanging from the rearview mirror of you car and a ball is at the end of this string. Suppose that your drive around a circular track at fixed speed. Which list below gives all the forces that act on the ball?
A) tension and the force of gravity
b) tension force of gravity and centripetal force
c) tension force of gravity and friction
d) tension only and how do you determine theanswer?
The correct answer is (B) tension force, gravity, and centripetal force.
To determine the forces acting on the ball, we need to consider the following:
1. Tension force: The ball is attached to the string, so there will be tension in the string pulling the ball towards the center of the circular track. This tension force keeps the ball hanging from the string.
2. Force of gravity: Gravity is acting downward, pulling the ball towards the center of the Earth. This force is always present, regardless of the motion of the ball.
3. Centripetal force: When the car is driving in a circular track, the ball is also moving in a circular path. To maintain this circular motion, there must be a centripetal force acting towards the center of the circular path. This force is provided by the tension in the string.
Therefore, the correct answer is option (B) tension force, gravity, and centripetal force.
The correct answer is A) tension and the force of gravity.
Explanation: When a string with a ball at the end is attached to the rearview mirror and the car is driving around a circular track, there are two main forces acting on the ball.
1. Tension: The string exerts a tension force on the ball, pulling it towards the center of the circular path. This tension force is responsible for keeping the ball in circular motion and preventing it from flying off.
2. Force of gravity: The ball experiences a downward force due to gravity. This force always acts vertically downward towards the earth's center.
Therefore, the correct answer is A) tension and the force of gravity as both forces are acting on the ball.