Laws of Motion

Related Questions

• A body of mass 2 kg is being dragged with uniform velocity of 2 m/s on a rough horizontal plane. The coefficient of friction between the body and the surface is 0.20. The amount of heat generated in 5 sec is $(J = 4.2\,joule/cal$ and $g = 9.8\,m/{s^2})$

  ---

• A rocket with a lift- off mass $3.5 \times {10^4}$$kg$ is blasted upwards with an initial acceleration of $10m/{s^2}.$ Then the initial thrust of the blast is

  ---

• The apparent weight of the body, when it is travelling upwards with an acceleration of $2m/{s^2}$ and mass is 10 kg, will be

  ---

• A man is standing on a weighing machine placed in a lift. When stationary his weight is recorded as 40 kg. If the lift is accelerated upwards with an acceleration of $2\,m/{s^2}$, then the weight recorded in the machine will be $(g = 10\,m/{s^2})$

  ---

• A student attempts to pull himself up by tugging on his hair. He will not succeed

  ---