Fly-wheel is used with an engine because it

Important Questions on System of Particles and Rotational Motion

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IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 7 - System of Particles and Rotational Motion>EXERCISE>Q 37

Different minerals are being mined from within the earth and multi-storeyed complexes are being constructed. Due to this activity theoretically

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NEET

IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 7 - System of Particles and Rotational Motion>EXERCISE>Q 39

A solid sphere of diameter $0.1 \mathrm{m}$ and mass $5 \mathrm{kg}$ is rolling down an inclined plane with a speed of $4 m s^{-1}$. The total kinetic energy of the sphere is

HARD

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IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 7 - System of Particles and Rotational Motion>EXERCISE>Q 40

The speed of a uniform solid cylinder after rolling down an inclined plane of vertical height $H$, from rest without sliding is

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IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 7 - System of Particles and Rotational Motion>EXERCISE>Q 41

A disc of mass $M \mathrm{kg}$ and radius $R$ metre is rotating at an angular speed of $\omega rad s^{-1}$ 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

EASY

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IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 7 - System of Particles and Rotational Motion>EXERCISE>Q 42

Choose the correct statement

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IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 7 - System of Particles and Rotational Motion>EXERCISE>Q 43

A thin uniform circular ring is rolling down an inclined plane of inclination $30°$ without slipping. Its linear acceleration along the inclined plane is

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IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 7 - System of Particles and Rotational Motion>EXERCISE>Q 44

A cylinder of radius $R$ and mass $M$ rolls without slipping down a plane inclined at an angle $\theta$. Coefficient of friction between the cylinder and the plane is $\mu$. For what maximum-inclination $\theta$ will the cylinder roll without slipping?

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IMPORTANT

Gamma Question Bank for Medical Physics>Chapter 7 - System of Particles and Rotational Motion>EXERCISE>Q 45

A physical balance has its arms of unequal length. A body weighs $18 \mathrm{kg}$ if kept in one pan and weighs $8 \mathrm{kg}$ if kept in the other pan. The true weight of the body is