Laws of Motion

Related Questions

• A bullet mass 10 gm is fired from a gun of mass 1kg. If the recoil velocity is 5 m/s, the velocity of the muzzle is

  ---

• In doubling the mass and acceleration of the mass, the force acting on the mass with respect to the previous value

  ---

• 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 solid disc of mass M is just held in air horizontally by throwing 40 stones per sec vertically upwards to strike the disc each with a velocity 6 $m{s^{ - 1}}$. If the mass of each stone is $0.05kg$ what is the mass of the disc$(g = 10m{s^{ - 2}}$)

  ---

• In the above problem if the lift moves up with an acceleration equal to the acceleration due to gravity, the reading on the spring balance will be

  ---