A particle moves along a straight line such that distance (x) traversed in t seconds is given by x = t2 (t – 4), the acceleration of the particle will be given by the equation __________________?

Question: A lead ball with a certain velocity is made to strike a wall, it falls down, but rubber ball of same mass and with same velocity strikes the same wall, it rebounds. Select the correct reason from the following:
[A].

both the balls undergo an equal change in momentum

[B].

the change in momentum suffered by rubber ball is more than the lead ball

[C].

the change in momentum suffered by rubber ball is less than the lead ball

[D].

none of the above

Answer: Option B

Explanation:

No answer description available for this question.

Question: Moment of inertia of a triangular section of base (b) and height (h) about an axis passing through its C.G. and parallel to the base, is
[A].

bh3/4

[B].

bh3/8

[C].

bh3/12

[D].

bh3/36

Answer: Option D

Explanation:

No answer description available for this question.

Question: A body is said to move or vibrate with simple harmonic motion if its acceleration is directed towards the mean position.
[A].

True

[B].

False

Answer: Option A

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: 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.