The range of gravitational forces is:
infinity
\( 10^{-2} \) m
Step 1: Understanding the Range of Gravitational Force Gravitational force is a fundamental force of nature that acts between any two masses. Unlike other fundamental forces (such as weak nuclear force or strong nuclear force), gravity: - Has an infinite range. - Gets weaker with increasing distance but never fully disappears.
Step 2: Explanation The gravitational force between two masses \( m_1 \) and \( m_2 \) is given by Newton's Law of Universal Gravitation: \[ F = G \frac{m_1 m_2}{r^2} \] where \( G \) is the gravitational constant and \( r \) is the distance between the two masses. As \( r \) increases, \( F \) decreases, but it never becomes exactly zero. This indicates that gravitational force has an infinite range.
Thus, the correct answer is: \[ \text{infinity} \]
A player can throw a ball to a maximum horizontal distance of 80 m. If he throws the ball vertically with the same velocity, then the maximum height reached by the ball is:
If a man of mass 50 kg is in a lift moving down with a acceleration equal to acceleration due to gravity, then the apparent weight of the man is:
A ball falls freely from a height h on a rigid horizontal plane. If the coefficient of resolution is e, then the total distance travelled by the ball before hitting the plane second time is:
A man weighing 75 kg is standing in a lift. The weight of the man standing on a weighing machine kept in the lift when the lift is moving downwards freely under gravity is: