Question 152: Laws of Motion

Question

A block of mass $$M$$ is pulled along a horizontal frictionless surface by a rope of mass $$m.$$ If a force $$P$$ is applied at the free end of the rope, the force exerted by the rope on the block is

Accepted Answer

Taking the rope and the block as a system
Acceleration of block($$a$$) = $${{Force\,applied} \over {total\,mass}}$$
$$	herefore$$ $$a = {P \over {m + M}}$$
Force on block(T) = Mass of block $$ 	imes $$ $$a$$
$$T=Ma$$
$$	herefore$$ $$T = {{MP} \over {m + M}}$$

Answer

$${{Pm} \over {M + m}}$$

Answer

$${{Pm} \over {M - m}}$$

Answer

$$P$$

Answer

$${{PM} \over {M + m}}$$

Laws of Motion

A block of mass $M is pulled along a horizontal frictionless surface by a rope of mass m. If a force P$ is applied at the free end of the rope, the force exerted by the rope on the block is

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