Question

A small spherical ball of mass 'm' is used as the bob of pendulum. The work done by the force of
tension on its displacement is 'W, the same ball is made to role on a frictionless table. The work
done by the force of normal reaction is 'W.Again the same bali is given a positive charge 9 and
made to travel with velocity 'V' in a magnetic field'B' The work done by the force experienced by
the charged ball is 'W . If the displacement in each case are the same, we have
1) W <W,<W
2) W, ₃W, ₃W
3) W = W, = W
4) that W W W , cannot be related​

Answer 1

Answer:

it must be 3 cauz in each cases angle b/w force and displacement is 90 and cos 90 is zero hope u got it