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A 0.145-kg baseball pitched horizontally at 35.0 m/s
Chapter 1, Problem 62GP(choose chapter or problem)
Problem 62GP
A 0.145-kg baseball pitched horizontally at 35.0 m/s strikes a bat and is popped straight up to a height of 55.6 m. If the contact time is 1.4 ms, calculate the average force on the ball during the contact.
Questions & Answers
QUESTION:
Problem 62GP
A 0.145-kg baseball pitched horizontally at 35.0 m/s strikes a bat and is popped straight up to a height of 55.6 m. If the contact time is 1.4 ms, calculate the average force on the ball during the contact.
ANSWER:Step 1 of 3
We need to calculate linear acceleration first from the given data and then we can calculate the time required by using the value of distance given.
Diameter of the pulley = 50 cm
Radius r = 0.25 m
Mass of the pulley m = 2.0 kg
So, its moment of inertia I =
I = 0.0625 …..(1)
Let be the tension on the rope
So, ( is linear acceleration)
…..(2)
Given that, …..(3)
Torque due to (from equation (3))
Torque due to tension
) (from equation (2))
Therefore, net torque
…..(4)