The minimumspeed with which athlete must leave the ground to lift his center of mass 2.10 m and cross the bar with a speed of 0.5 m/s.
Answer to Problem 34P
Solution:The minimumspeed with which athlete leaves the ground to lift his center of mass
is 6.43 m/s.
Explanation of Solution
Given:Final height,
Final velocity,
Initial height is zero.
Formula Used:
We assume that all the forces on the jumper are conservative so that the mechanical energy of the jumper is conserved andaccording to the law of conservation of energy
Where m is the mass of athlete,
Calculations: Solving for initial velocity
Minimum speed of athlete is 6.43 m/s.
Conclusion:Athlete must leave the ground at speed of 6.43 m/s to lift his center of mass 2.10 m and cross the bar with a speed of 0.5 m/s.
Chapter 6 Solutions
Physics: Principles with Applications
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