The correct answer to the question is : A) 400 N
EXPLANATION:
Let us consider two bodies having masses M and M' which are separated by a distance of R.
The gravitational force that acts between them is calculated as -
Gravitational force F =
Here, G is known as the universal gravitational force constant.
From above, we see that F is inversely proportional to the square of separation distance.
As per the question, the gravitational force between them F = 1600 N.
The distance between them is doubled.
Hence, the force between them will be reduced by four times as per the above relation.
Hence, the gravitation force will be =
= 400 N. [ANS]
Explanation:
The given data is as follows.
height (h) = 98.0 m, speed (v) = 73.0 m/s,
Formula of height in vertical direction is as follows.
h = ,
or, t =
Now, formula for the required distance (d) is as follows.
d = vt
=
=
= 326.5 m
Thus, we can conclude that 326.5 m is the horizontal distance from the target from where should the pilot release the canister.