a particle is projected from a horizontal plane to pass over to the objects at height h and k and a slant distance d apart. What is the least possible speed of projection?




ans:(g(h+k+d))^1/2

a particle projected at an angle a with the horizontal from the foot of an inclined plane making an angle b with horizontal. Show:
cotb=2tan(a-b)

When the range of a projectile on an inclined plane is maximum then
1.the focus of the path is on the plane
2.the focus of the path is below the plane
3.the focus of the path is above the plane
4.the focus of the path is at any place

Please give detailed answer

A girl going eastwards with a velocity of 4km/hr, find that the wind appears to blow directly from north/. She doubles her speed and the wind appears to blow from north east. The actual velocity of wind is? (direction and magnitude)

A heavy block of mass m is supported by a cord C attached to the ceiling , and another cord D is attached to the bottom of the given block . If a sudden jerk is given to D, then
1. cord C breaks
2.cord D breaks
3. none breaks

a particle of mass m is moving under the variable force f. if magnitude of f is constant, then the possible path of the particle can never be:
1. rectilinear
2.circular
3.parabolic
4.elliptical

do explain

a particle of mass m move son the x axis as follows. It starts from rest at t=0 from thr point x=0, and comes to rest at t=1 at the point x=1. no other information is available about its motion at intermediate time . If a denotes instantaneous acceleration of the particle
prove that
|a|be>=4 at point or some points in its path

A particle is found to be at rest when seen from frame S1 and moving with a constant velocity when seen from another frame S2.
Mark the possible points from the following:
1. both frame sare inertial
2. both frames are noninertial.
3. s1 is non inertial and s2 is inertial
4.both a and b are correct

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An insect is crawling up a fixed hemispherical bowl of radius R.the coefficient of friction between insect and bowl is 1/3. the insect can only crawl up to a height
1. 60% of R
2.10% of R
3.5% of R
4.100% of R

divyasharma, Curlyben was right to post that announcement. We really are here to HELP you, not to completely do your homework for you. The red "No" feedback should be reserved for answers which are factually incorrect, not just because it wasn't the answer you were looking for.

Now, having said that, I'll be happy to give you some assistance on this problem. Unfortunately, however, it's not very clear what you mean. I'm assuming there's a diagram to go with the problem? Can you please explain the drawing a little more clearly or, if possible, scan it? I'm not sure what you mean when you say "and a slant distance d apart".

Someone should merge those merged threads in a single post. There are 9 questions posted, but only the first is visible to users using Go...