7. A 2 kg tether ball hangs on a 1.2 meter long string. The string can...
A 0.70 kg ball on the end of a 1.10 meter long string is swung above the head of a physics student at a constant rate (assume that the string is horizontal during this motion). If the string can experience a maximum tension of 10.0 N before snapping, what is the fastest the ball can be swung?
The hammer throw is an Olympic event where a 7.5 kg metal ball is attached to a 1.2 m long wire, as shown in the diagram. One such competitor was observed to swing the hammer around in a horizontal circle with an average angular acceleration a = 5.6 rad/s?. After 3 seconds the hammer was released. (a) Calculate the angular velocity and tangential speed of the metal ball just before it is released. (b) Calculate the number of revolutions the...
Block A and block B are connected by a massless string over a smooth and massless pulley as shown below. The masses of block A and block B are 2 kg and 1 kg respectively The two blocks are released from rest. Ceiling Block B Block A (a) Draw two force diagrams, one for each block. (2%) (b) Calculate the acceleration of block A. (490) (c) Calculate the tension in the rope. (2%) (d) Using the conservation of energy, calculate...
Renee is on Spring Break and pulling her 21-kg suitcase through the airport at a constant speed of 0.47 m/s. She pulls on the strap with 120 N of force at an angle of 38° above the horizontal. Assume the ground to be flat, Draw a FBD showing the forces on the suitcase. Find the acceleration of the suitcase. Determine the normal force experienced by the suitcase. Determine the total resistive force (friction) experienced by the suitcase. Find the coefficient...
1. According to the paper, what does lactate dehydrogenase
(LDH) do and what does it allow to happen within the myofiber? (5
points)
2. According to the paper, what is the major disadvantage of
relying on glycolysis during high-intensity exercise? (5
points)
3. Using Figure 1 in the paper, briefly describe the different
sources of ATP production at 50% versus 90% AND explain whether you
believe this depiction of ATP production applies to a Type IIX
myofiber in a human....