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## Main Question or Discussion Point

A bowling ball is released with no rotation (linear KE only) at a given speed, the friction between the ball and the lane creates a torque which tends to rotationaly accelerate the ball, robbing it of linear KE and reducing the linear speed until synchronous speed is reached.

My question is :

The rotational torque i got from : m * g * µ * r

m = mass

g = local gravity rate

µ = friction co-efficient

r = ball radius

Is all the friction force absorbed in rotating the ball, or does part of it decelerate the ball directly ?

Comments please

Thanks

Dean

My question is :

The rotational torque i got from : m * g * µ * r

m = mass

g = local gravity rate

µ = friction co-efficient

r = ball radius

Is all the friction force absorbed in rotating the ball, or does part of it decelerate the ball directly ?

Comments please

Thanks

Dean