A sufficiently long platform of mass m rests on frictionless ground. A cy!inder of mass m and radius R=2 (m) rotating around its center of mass at an angular velocity w = 50 (rad/s) is slowly dropped onto the platform at t = 0. The coefficient of friction between the cylinder and the platform is u = 0.2. After how many seconds does the cylinder start to roll without slipping? Ikm =mR², g = 10 (m/s*) т R A) 0.5 В) 2.5 C) 5 D) 7.5 E) 12.5
A sufficiently long platform of mass m rests on frictionless ground. A cy!inder of mass m and radius R=2 (m) rotating around its center of mass at an angular velocity w = 50 (rad/s) is slowly dropped onto the platform at t = 0. The coefficient of friction between the cylinder and the platform is u = 0.2. After how many seconds does the cylinder start to roll without slipping? Ikm =mR², g = 10 (m/s*) т R A) 0.5 В) 2.5 C) 5 D) 7.5 E) 12.5
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Transcribed Image Text:A sufficiently long platform of mass m rests on frictionless ground. A cy!inder of mass m and radius
R=2 (m) rotating around its center of mass at an angular velocity w = 50 (rad/s) is slowly dropped onto
the platform att= 0. The coefficient of friction between the cylinder and the platform is u = 0.2. After how
many seconds does the cylinder start to roll without slipping?
Ikm =mR?, g = 10 (m/s²)
m
m
A) 0.5
В) 2.5
C) 5
D) 7.5
E) 12.5
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