B M Sharma Solutions for Chapter: Newton's Laws of Motion (Without Friction), Exercise 16: CONCEPT APPLICATION EXERCISE 6.2

A mass $m$ is placed on a body of mass $M$. There is no friction anywhere. Force $F$ is applied on $M$ and it moves with acceleration $a$. Find the force (along $x-$axis) on the top body.

In figure, the mass of the man is $M$. Calculate the mass of the man as registered by weighing machine. Assume weighing machine, man, and wedge all are stationary.

A small object is suspended at rest from two strings as shown in figure. The magnitude of the force exerted by each string on the object is $10\sqrt{2} \mathrm{N}$. Find the magnitude of the mass of the object.

The object in figure weighs $40 \mathrm{kg}$ and hangs at rest. Find the tensions in the three cords that hold it.

A block of mass $m=10 \mathrm{kg}$ is suspended with the help of three strings as shown in figure. Find the tensions $T_1$and $T_2$.
 

Determine tension $T_4$ in figure.

 A block of mass $25 \mathrm{kg}$ is raised by a $50 \mathrm{kg}$ man in two different ways as shown in figure. What is the action on the floor by the man in the two cases? If the floor yields to a normal force of $700 \mathrm{N}$, which mode should the man adopt to lift the block without the floor yielding?

Consider the two configurations shown in equilibrium. I Find the ratio of $\frac{T_{\mathrm{A}}}{T_{\mathrm{B}}}$. (Ignore the mass of the rope and the pulley.)