Question: The cartesian equation of trajectory is(where u = Velocity of projection, α = Angle of projection, and x, y = Co-ordinates of any point on the trajectory after t seconds.)
[A].

[B].

[C].

[D].

Answer: Option C

Explanation:

No answer description available for this question.

Question: Which of the following statement is correct in connection with projectiles?
[A].

A path, traced by a projectile in the space, is known as trajectory.

[B].

The velocity with which a projectile is projected, is known as the velocity of projection.

[C].

The angle, with the horizontal, at which a projectile is projected is known as angle of projection.

[D].

all of the above

Answer: Option D

Explanation:

No answer description available for this question.

Question: In the shown figure, if the angle of inclination of the plane is increased, then acceleration of the system will
[A].

increase

[B].

decrease

[C].

remain the same

Answer: Option B

Explanation:

No answer description available for this question.

Question: A block of mass m1, placed on an inclined smooth plane is connected by a light string passing over a smooth pulley to mass m2, which moves vertically downwards as shown in the below figure. The tension in the string is
[A].

m1/m2

[B].

m1.g sin α

[C].

m1.m2/m1+m2

[D].

Answer: Option D

Explanation:

No answer description available for this question.

Question: A block ot mass 20 kg lying on a rough horizontal plane is connected by a light string passing over a smooth pulley to another mass 5 kg, which can move freely in the Vertical direction, as shown in the below figure. The tension in the string will __________ with the increase in coefficient of friction.
[A].

increase

[B].

decrease

[C].

not be effected

Answer: Option A

Explanation:

No answer description available for this question.

Question: If the masses of both the bodies, as shown in the below figure, are reduced to 50 percent, then tension in the string will be
[A].

same

[B].

half

[C].

double

Answer: Option B

Explanation:

No answer description available for this question.

Question: If the masses of both the bodies, as shown in the below figure, are doubled, then the acceleration in the string will be
[A].

same

[B].

half

[C].

double

Answer: Option A

Explanation:

No answer description available for this question.

Question: A force while acting on a body may
[A].

change its motion

[B].

balance the forces, already acting on it

[C].

give rise to the internal stresses in it

[D].

all of these

Answer: Option D

Explanation:

No answer description available for this question.

Question: In the shown figure, the tension (T) in the string will be
[A].

[B].

[C].

[D].

Answer: Option B

Explanation:

No answer description available for this question.

Question: If tension in the cable supporting a lift moving downwards is half the tension when it is moving upwards, the acceleration of the lift is
[A].

g/2

[B].

g/3

[C].

g/4

[D].

none of these

Answer: Option D

Explanation:

No answer description available for this question.