Describe how the anuglar displacement and angular velocity of the forearm change
ID: 2259945 • Letter: D
Question
Describe how the anuglar displacement and angular velocity of the forearm change as a person performs a bicep curl, i.e. the person holds a weight with their arm fully extended an hanging straight down, then holding the upper arm still, flexes the elbow to raise the weight to the shoulder. The person then moves the weight back tot hes tarting position.
Make a qualitative sketch of the speed of the dumbell as it is moved through one bicep curl and explain how you arrived at this graph.
Imagine that you are holding a 10 lb weight in your hand, with your forearm parallel to the ground and your upper arm perpendicular to the ground. wHAT IS THE FORCE EXERTED BY YOUR BICEP ON YOUR FOREARM WHILE YOU ARE HOLDING THIS WEIGHT? (a rough guess is fine- just explain how you GOT THIS answer)
Help me PleasEEEE!!
Explanation / Answer
The angular displacement increases as a person performs a bicep curl while angular velocity remains the same. It doesn't change as long as there is constant angular acceleration