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Physics-

General

Easy

Question

A tachometer is a device to measure

Gravitational pull
Speed of rotation
Surface tension
Tension in a spring

The correct answer is: Speed of rotation

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The angle of projection at which the horizontal range and maximum height of projectile are equal is

The angle of projection at which the horizontal range and maximum height of projectile are equal is

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The coordinates of a moving particle at any time $´ t ´$ are given by $x equals alpha t to the power of 3 end exponent$ and $y equals beta t to the power of 3 end exponent$ . The speed of the particle at time $´ t ´$ is given by

The coordinates of a moving particle at any time $´ t ´$ are given by $x equals alpha t to the power of 3 end exponent$ and $y equals beta t to the power of 3 end exponent$ . The speed of the particle at time $´ t ´$ is given by

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What should be the coefficient of friction between the tyres and the road, when a car travelling at 60 $k m blank h to the power of negative 1 end exponent$ makes a level turn of radius 40 m?

What should be the coefficient of friction between the tyres and the road, when a car travelling at 60 $k m blank h to the power of negative 1 end exponent$ makes a level turn of radius 40 m?

Physics-General

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A mass of 2 kg is whirle‘d in a horizontal circle by means of a string at an initial speed of 5 revolutions per minute. Keeping the radius constant, the tension in the string is double. The new speed is nearly

A mass of 2 kg is whirle‘d in a horizontal circle by means of a string at an initial speed of 5 revolutions per minute. Keeping the radius constant, the tension in the string is double. The new speed is nearly

Physics-General

Two paper screens $A$ and $B$ are separated by a distance of 200 m. A bullet pierces $A$ and then $B$ . The hole in $B$ is 40 cm below the hole in $A$ . If the bullet is travelling horizontally at the time of hitting $A$ , then the velocity of the bullet at $A$ is

Two paper screens $A$ and $B$ are separated by a distance of 200 m. A bullet pierces $A$ and then $B$ . The hole in $B$ is 40 cm below the hole in $A$ . If the bullet is travelling horizontally at the time of hitting $A$ , then the velocity of the bullet at $A$ is

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The sum of two vectors $stack A with rightwards arrow on top$ and $stack B with rightwards arrow on top$ is at right angles to their difference. Then

The sum of two vectors $stack A with rightwards arrow on top$ and $stack B with rightwards arrow on top$ is at right angles to their difference. Then

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A body of mass $0.4 blank k g$ is whirled in a vertical circle making $2 blank r e v divided by s e c$ . If the radius of the circle is $2 blank m$ , then tension in the string when the body is at the top of the circle, is

A body of mass $0.4 blank k g$ is whirled in a vertical circle making $2 blank r e v divided by s e c$ . If the radius of the circle is $2 blank m$ , then tension in the string when the body is at the top of the circle, is

Physics-General

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 the diameter. The angular velocity of $P$ about $A$ and $C$ is in ratio

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 the diameter. The angular velocity of $P$ about $A$ and $C$ is in ratio

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A body of mass 5 kg is moving in a circle of radius 1 m with an angular velocity of 2 $r a d blank s to the power of negative 1 end exponent$ . The centripetal force, is

A body of mass 5 kg is moving in a circle of radius 1 m with an angular velocity of 2 $r a d blank s to the power of negative 1 end exponent$ . The centripetal force, is

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A particle moves in the $x minus y$ plane with velocity $v subscript x end subscript equals 8 t minus 2$ and $v subscript y end subscript equals 2$ . If it passes through the pointy $x equals 14$ and $y equals 4$ at $t equals 2 s$ , find the equation ( $x minus y$ relation) of the path

A particle moves in the $x minus y$ plane with velocity $v subscript x end subscript equals 8 t minus 2$ and $v subscript y end subscript equals 2$ . If it passes through the pointy $x equals 14$ and $y equals 4$ at $t equals 2 s$ , find the equation ( $x minus y$ relation) of the path

Physics-General

A car is moving in a circular horizontal track of radius $10 blank m$ with a constant speed of $10 blank m divided by s e c$ . A plumb bob is suspended from the roof of the car by a light rigid rod of length $1.00 blank m$ . The angle made by the rod with track is

A car is moving in a circular horizontal track of radius $10 blank m$ with a constant speed of $10 blank m divided by s e c$ . A plumb bob is suspended from the roof of the car by a light rigid rod of length $1.00 blank m$ . The angle made by the rod with track is

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If the two adjacent sides of a parallelogram are represented by vectors $stack i with hat on top$ + 2 $stack j with hat on top$ + 3 $stack k with hat on top$ and – 3 $stack i with hat on top$ + 2 $stack j with hat on top$ + $stack k with hat on top$ , then its area is -

If the two adjacent sides of a parallelogram are represented by vectors $stack i with hat on top$ + 2 $stack j with hat on top$ + 3 $stack k with hat on top$ and – 3 $stack i with hat on top$ + 2 $stack j with hat on top$ + $stack k with hat on top$ , then its area is -

parallel

If the vectors $4 stack i with hat on top plus 11 stack j with hat on top plus m stack k with hat on top$ , $7 stack i with hat on top plus 2 stack j with hat on top plus 6 stack k with hat on top$ and $stack i with hat on top plus 5 stack j with hat on top plus 4 stack k with hat on top$ are coplanar, then m is

If the vectors $4 stack i with hat on top plus 11 stack j with hat on top plus m stack k with hat on top$ , $7 stack i with hat on top plus 2 stack j with hat on top plus 6 stack k with hat on top$ and $stack i with hat on top plus 5 stack j with hat on top plus 4 stack k with hat on top$ are coplanar, then m is

A body starts from rest from the origin with an acceleration of $6 blank m divided by s to the power of 2 end exponent$ along the $x$ -axis and $8 blank m divided by s to the power of 2 end exponent$ along the $y$ -axis. Its distance from the origin after 4 seconds will be

A body starts from rest from the origin with an acceleration of $6 blank m divided by s to the power of 2 end exponent$ along the $x$ -axis and $8 blank m divided by s to the power of 2 end exponent$ along the $y$ -axis. Its distance from the origin after 4 seconds will be

Physics-General

Find the maximum speed at which a car can turn round a curve of 30 m radius on a level road if the coefficient of friction between the tyres and the road is 0.4
(Acceleration due to gravity $equals 10 blank m s to the power of negative 2 end exponent right parenthesis$

Find the maximum speed at which a car can turn round a curve of 30 m radius on a level road if the coefficient of friction between the tyres and the road is 0.4
(Acceleration due to gravity $equals 10 blank m s to the power of negative 2 end exponent right parenthesis$

Physics-General

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