Motion Under Gravity

The Leaning Tower of Pisa does not fall because –

Two balls A and B are of $10\mathrm{kg}$ and $1\mathrm{kg}$ , respectively. They are dropped simultaneously from a height of 20 m. Which of the following is correct?

The weight of a body is -

A body-weight is highest in which among the following?

If a person sitting in a lift then when will he feel that his weight gets increased?

Why do pendulum clocks usually lose time in summer?

If the distance between the Earth and the Sun were twice what it is now, the gravitational force exerted on the Earth by the Sun would be -

The Earth travels in its orbit at a speed of approx 4,400 km per hour. Why do we not feel this high speed?

If the gravitational force of the Earth suddenly disappears, which are of the following will be the correct consequence?

Astronauts in space can not stand erect. This is because, in space -

If an apple is released from an orbiting spaceship, it will -

A Geosynchronous satellite continuously active in its orbit due to centripetal force which is obtained by-

Satellite is kept moving in its orbit around the Earth; it is due to -

An artificial satellite can be tracked very precisely from the Earth by using :

There is no atmosphere on the Moon because -