Physics Crash Course MHT-CET>Chapter 1 - Motion in a Plane>Exercise 1>Q 123

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Which of the following relations is not correct?

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Important Questions on Motion in a Plane

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Physics Crash Course MHT-CET>Chapter 1 - Motion in a Plane>Exercise 1>Q 124

What is the value of linear velocity if

\vec{ω} = 3 \hat{i} - 4 \hat{j} + \hat{k}

and

\vec{r} = 5 \hat{i} - 6 \hat{j} + 6 \hat{k}

?

MEDIUM

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Physics Crash Course MHT-CET>Chapter 1 - Motion in a Plane>Exercise 1>Q 125

A wheel has circumference

C

. If it makes

f

rotations per second, the linear speed of a point on the circumference is,

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Physics Crash Course MHT-CET>Chapter 1 - Motion in a Plane>Exercise 1>Q 126

A body is whirled in a horizontal circle of radius

20 cm

. It has angular velocity of

10 rad s^{- 1}

. What is its linear velocity at any point on circular path?

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Physics Crash Course MHT-CET>Chapter 1 - Motion in a Plane>Exercise 1>Q 127

A particle moves in a circular path of radius

0.4 m

with constant speed. If particle makes

5

revolutions in each second of its motion, the speed of the particle is,

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Physics Crash Course MHT-CET>Chapter 1 - Motion in a Plane>Exercise 1>Q 128

A particle $P$ is moving in a circle of radius $r$ with a uniform speed $v$ . $C$ is the centre of the circle and $A B$ is a diameter. When passing through $B$ , the angular velocity of $P$ about $A$ and $C$ are in the ratio,

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Physics Crash Course MHT-CET>Chapter 1 - Motion in a Plane>Exercise 1>Q 129

If the angle between tangential acceleration and resultant acceleration in non-U.C.M.(non uniform circular motion) is

α

, then direction of the resultant acceleration will be,

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Physics Crash Course MHT-CET>Chapter 1 - Motion in a Plane>Exercise 1>Q 130

A car is moving along a circular road at a speed of

20 m s^{- 1}

. The radius of circular road is

10 m

. If the speed is increased at a rate of

30 m s^{- 2}

, what is the resultant acceleration at that moment?

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Physics Crash Course MHT-CET>Chapter 1 - Motion in a Plane>Exercise 1>Q 131

Select the wrong statement.