A copper ball of radius `r` travels with a uniform speed v in a viscous fluid if the ball is changed withh another ball of radius 2r then new uniform speed will be

A copper ball of radius r is moving with a uniform velocity u in the mustard oil. The dragging force acting on the ball is F . The dragging force on the copper ball of radius 2r moving with uniform velocity 2u in the mustart oil is

A ball of mass m and radius r is released in a viscous fluid. The value of its terminal velocity is proportional to

Spherical balls of radius R are falling in a viscous fluid of velocity v .The retarding viscous force acting on the spherical ball is

Spherical balls of radius R are falling in a viscous fluid of velocity v .The retarding viscous force acting on the spherical ball is

The acceleration of an object moving in a circle of radius R with uniform speed v is

The acceleration of an object moving in a circle of radius R with uniform speed v is

The acceleration of an object moving in a circle of radius R with uniform speed v is

A ball is travelling with uniform translatory motion . This means that