Neglect the effect of rotation of the earth. Suppose the earth suddenly stops attracting objects placed near its surface.

(a) have same velocities at any instant

The moon will begin to move in a straight line in the direction in which it was moving at that instant because the circular motion of moon is due to...

We can see any object, when light reflected by that object reaches our eyes. But in the dark room, no light is reflected by the object so we are unable...

(d) increase at some places and remain the same at some other places. Explanation: If the earth stops rotating the apparent weight will increase at most of the places because the upward...

(b) A is correct but B is wrong. EXPLANATION:   As we move towards poles the value of g  starts increasing. Another fact is that as we go up at a place the...

(a) P1= 0, P2 = atmospheric pressure EXPLANATION:   Since there is nothing above the surface of the mercury in the tube the density above this surface =0, hence the pressure P₁ =0,...

(d) remain standing. Explanation: The person will loose weight but remain standing. As no force acts on him, so according to "Newton's First Law of Motion" he will remain in his state...

(d) increase at some places and remain the same at some other places. Explanation: If the earth stops rotating the apparent weight will increase at most of the places because the upward component of...

(a) P1= 0, P2 = atmospheric pressure EXPLANATION:   Since there is nothing above the surface of the mercury in the tube the density above this surface =0, hence the pressure P₁ =0, and...

One can choose 3 objects out of 28 objects in (28,3) ways.  Among these choices all would be together in 28 cases; exactly two will be together in 28 x 24...