Question

3. A block of mass M is pulled along a horizontal frictionless by a rope of mass m. If a force P is applied at the free end of the rope, what will be the force exerted by the rope on the block?

Answer 1

What do you think it is?

Answer 2

i dunno

Answer 3

Every force has an equal and opposite reaction.

Answer 4

soo

Answer 5

so

Answer 6

noo

Answer 7

Actually we want this:
P = (M+m)a, hence
a = P/(M+m)

thus the force on the block is
Ma = MP/(M+m)

Answer 8

ya thts the one