7. A 50 kg pole vaulter running at 10 m/s vaults over the bar. Her speed when she is over the bar is 1.0 m/s. Neglect air resist
2 answers:
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- Coefficient of static friction = 0.5
- Coefficient of Kinetic friction = 0.3
- Angular velocity = 500 RPMs
Let R be the radius of cylinder
The angular velocity is 500 RPMs
The normal force
Since the radius is very little for two block to execute circular motion so system will slide down.
Learn more on coefficient of static friction here;
Explanation:
9 × 10^-3 × 13.59 = 0.122 N
