A person sitting in a lift feels that his weight is more when the lift is going up at an accelerated speed. During upward acceleration, the lift floor exerts an additional force on the person, making them feel heavier due ...
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When a stone is brought from the surface of the moon to the Earth, its mass will remain the same, as mass is an intrinsic property unaffected by gravitational fields. However, its weight will change due to Earth’s stronger gravity, ...
If a body is thrown from the Earth with a velocity of 11.2 km per second, then the body will never return to the Earth. This velocity exceeds the escape velocity of Earth, ensuring that the body will continue moving ...
The period of a Geostationary Satellite is 24 hours. A geostationary satellite orbits the Earth at the same rate as the Earth’s rotation, completing one orbit in 24 hours. This allows it to appear stationary relative to a fixed point ...
With 11.2 km/s minimum velocity will a rocket overcome the Earth’s gravity and go into space when launched from the Earth’s surface. This velocity is known as the escape velocity, the minimum speed required for an object to break free ...
Jet engine works on the principle of conservation of linear momentum. It generates thrust by expelling high-speed exhaust gases backward, imparting momentum to the engine in the forward direction. This action-reaction pair conserves linear momentum, facilitating propulsion in jet engines.
The reason for there being no atmosphere on the Moon is escape velocity of gas molecules. The escape velocity of gas molecules on it is less than their root means square velocity.
The working principle of a washing machine is centrifugation. During the spin cycle, the machine rotates rapidly, creating centrifugal force. This force pushes water and dirt outwards from the clothes, facilitating their separation from the fabric. Centrifugation, accurately describes this ...
A heavy iceberg melts at the bottom rather than the top because the melting point decreases due to the pressure of the lower layer being higher. The increased pressure lowers the melting point, causing ice to melt more readily at ...
Cleaning a carpet by beating it with a stick follows the third law of motion. When the stick strikes the carpet, it exerts a force on it, and the carpet exerts an equal and opposite reaction force on the stick, ...