None
A man weighs 80 kg. He stands on a weighing scale in a lift which is moving upwards with a uniform acceleration of 5m/s2. What would be the reading on the scale. (g=10m/s2)
800
1200
400
0
Gravitational field intensity due to a uniform disc at point '' in the given diagram is equal to -
zero
The area (in square units) bounded by the curves and lying in the first quadrant is :
9
36
18