Momentum and CollisionHard
Question
A glass full of water is placed on a weighing scale, which reads 10 N. A coin with weight 1 N is gently released into the water. At first, the coin accelerates as it falls and about halfway down the glass, the coin reaches terminal velocity. Eventually, the coin rests on the bottom of the glass. Acceleration due to gravity is 10 m/s2. The scale reads
Options
A.10.5 N when the coin accelerates at 5 m/s2.
B.11.5 N, when the coin decelerates at 5 m/s2.
C.11 N, when the coin moves with terminal velocity.
D.11 N, when the coin rests on the bottom.
Solution
When coin moves with terminal velocity or rests on the bottom Reading = 10 + 1 = 11 N
When coin moves with acceleration of 5 m/s2 Reading = 10 + 1 (1/2) = 10.5 N
When coin moves with acceleration of 5 m/s2 Reading = 10 + 1 (1/2) = 10.5 N
Create a free account to view solution
View Solution FreeMore Momentum and Collision Questions
A balloon filled with air is weighted, so that it barely floats in water as shown in figure. When it is pushed down so t...The height to which water rises in a capillary will be : -...A fixed volume of iron is drawn into a wire of length l. The extension produced in this wire by a constant force F is pr...The direction of the angular velocity vector along :...A body ′A′ of mass M while falling vertically downwards under gravity breaks into two parts, a body B of mas...