I think I have to look at this right from the beginning. I need to look at terminology, so im going to make sure I have these concepts and ill just paste them as I look them up to save anyone else interested the time...
- The line of compression is the direction of the impact force.
- Force is the capacity to do work or cause physical change; energy, strength, or active power.
- A Force is equal to mass times acceleration per newtons 2nd law
- Acceleration is the rate of change of velocity with respect to time.
- Velocity is a vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion.
- Vector is a quantity, completely specified by a magnitude and a direction.
- Magnitude is the greatness in significance.
Ok question time relating to these terms....
To maintain a certain velocity of anything, it is always accelerating ?
For a given force when a collision occurs, the force transfered by the acceleration really means the velocity created by that acceleration at that moment in time?
A ball whirling around like in my picture post above - since the velocity or acceleration (discounting the other forces just now) is always tangential to the orbit, then the force of that ball hitting anything (tangential force I assume) is also going to be tangential to its orbit?
and if this is true - then the direction of the clubhead force (keeping the clubface seperate for just now) traveling in its orbit should be tangential to the clubhead orbit?
I think I have to look at this right from the beginning. I need to look at terminology, so im going to make sure I have these concepts and ill just paste them as I look them up to save anyone else interested the time...
- The line of compression is the direction of the impact force.
- Force is the capacity to do work or cause physical change; energy, strength, or active power.
- A Force is equal to mass times acceleration per newtons 2nd law
- Acceleration is the rate of change of velocity with respect to time.
- Velocity is a vector quantity whose magnitude is a body's speed and whose direction is the body's direction of motion.
- Vector is a quantity, completely specified by a magnitude and a direction.
- Magnitude is the greatness in significance.
Ok question time relating to these terms....
To maintain a certain velocity of anything, it is always accelerating ? No...a constant velocity means NO acceleration. Acceleration causes a change in velocity.
For a given force when a collision occurs, the force transfered by the acceleration really means the velocity created by that acceleration at that moment in time? Force is not transferered by acceleration. Acceleration is created by force. Think of a golf ball dropped from height onto concrete to get an idea of force, accel and velocity. It is released from the hand and at that instant the only force on it becomes gravity (9.8m/s^2), so the ball accelerates down at approximately 9.8m/s^2 (disregarding drag through the air, as it is tiny in this instance), this acceleration continues until the ball hits the ground.
Assume the ball takes 1 second from the time it is released until the time it hits the ground, it will hit the ground at 9.8m/s (velocity). The ground then imparts a force on the ball, accelerating it in an upwards direction. This force and resultant acceleration stops the ball dropping. Due to ball compressing on contact with the ground, when the ball decompresses the upward acceleration continues and the ball ends up with an upward velocity (say m/s). Once impact with the ground is over and the ball is airborne again the only force is gravity and it all repeats
A ball whirling around like in my picture post above - since the velocity or acceleration VELOCITY AND ACCELERATION ARE NOT THE SAME(discounting the other forces just now) is always tangential to the orbitIntantaneous velocity is tangential to the orbit, but acceleration is towards the centre of the orbit. This acceleration is due to the force (tension) in the string, then the force of that ball hitting anything (tangential force I assume) is also going to be tangential to its orbit? The force of the ball hitting anything depends on what it hits and how. Assuming it hits a wall perpendicular to the balls orbit, then yes it will be a tangential force.
and if this is true - then the direction of the clubhead force (keeping the clubface seperate for just now) traveling in its orbit should be tangential to the clubhead orbit?I am confused as to waht you are asking here. The clubhead travelling in an orbit does not have force, it has velocity and momentum. Only once the club is contacts something (hopefully a ball) will it apply a force.
A Force is equal to mass times acceleration per newtons 2nd law.
To maintain a certain velocity of anything, it is always accelerating ?
Remember it is net force that matters, not any old force. For example, if I am pushing a box forwards on a table at a constant speed, I have to apply force to push it forwards. According to the equation F=ma, there would be acceleration (a=F/m). But because F refers to net force, acceleration is zero. The frictional forces between the table and box cancel out (vector sum of forces equal to zero). When forces are balanced, there is no change in velocity (this does not necessarily mean 0m/s), hence acceleration is zero.
You can maintain a constant speed of something and still make it accelerate, as in circular motion. But you can't maintain a constant velocity.
Hybrid Mode
