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Banking of Roads

3.A disc of m...

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3.A disc of mass M kg and radius R metre is rotating at an angular speed of w rad/s when the motor is switched off. Neglecting the friction at the axle, the force that must be applied tangentially to the wheel to bring it to rest in time t is

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Q. A disc of mass

M k g

R

metre is rotating at an angular speed of

ω r a d / s

when the motor is switched off. Neglecting the friction at the axle, the force that must be applied tangentially to the wheel to bring it to rest in time

t

Q. A wheel of mass

10 k g

20 c m

is rotating at an angular speed of

100 r e v / m i n

when the motor is turned off. Neglecting the friction at the axle, calculate the force that must be applied tangentially to the wheel to bring it to rest in

10

Q. A wheel of mass

10 k g

20 c m

is rotating at an angular speed of

100

rev/min when the motor is turned off. Neglecting the friction at the axis, calculate the force that must be applied tangentially to the wheel to bring it to rest in

10

revolutions. (Consider wheel to be a uniform circular disc)

Q. A wheel of mass

10 k g

0.2 m

is rotating at an angular speed of

100 r p m,

when the motion is turned off. Neglecting the friction at the axis, the force that must be applied tangentially to the wheel to bring it to rest in

10

rev is approximately

o . x N

x

. Assume wheel to be a disc.

Q. A hollow sphere of mass

1 k g

10 c m

is free to rotate about its diameter. If a force of

30 N

is applied tangentially to it, its angular acceleration is (in\

r a d / s^{2}

)

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