A heavy iron ball is taken into space where it is weightless. Will it hurt to kick this football since it is weightless ?

Two small balls having equal positive charge Q (coulomb) on each are suspended by two insulated string of equl length L meter, from a hook fixed to a stand. The whole set-up is taken in satellite into space where there is no gravity (state of weightlessness). Then the angle between the string and tension in the string is

The terminal velocity of a ball in air is v, where acceleration due to gravity is g. Now the same ball is taken in a gravity free space where all other conditions are same. The ball is now pushed at a speed vv, then –

A heavy ball of mass m is tied to a weightless thread of length 1. The friction of the ball against air is proportional to its velocity relative to the air: F_(lr) = muv . A strong horizontal wind is blowing at a constant velocity v. Determine the period T of small oscillations, assuming that the oscillations of the ball attenuate in a time much longer than the period of oscillations.

A pendulum clock gives correct time at 20^C at a place where g =9.800 m s^(-2) .The pendulum consists of a light steel rod connected to a heavy ball. It is taken to a different place where g =9.788 m s^(2) . At what temperature will it give correct time ? coefficient of linear expansion of steel = 12 xx 10^(-6) 0^C(-1) .

Two small balls having equal positive charge Q (coulumb) on each suspended by two insulating strings of equal length L (metre) from a hook fixed to a stand. The whole set-up is taken in a satellite into space where there is no gravity (state of weightlessness). Then tension (newtons) in each string is:

An iron ball has an air space in it. It weighs 1 kg in air and 0.6 kg in water .Find the volume of air space. Density of iron =7200 "kgm"^(3).

Two small balls having equal poistive charges Q( coulomb) on each are suspended by two insulating strings of equal length L(metre) from a hook fixed to a stand. The whole set up is taken in a satellite into space where there is no gravity (state of weightlessness). The angle between the two strings is...............and the tenison in each string is...................newtons.