A mass $M$ is suspended by a rope from a rigid support at $A$ as shown in figure. Another rope is tied at the end $B$, and it is pulled horizontally with a force $.......$ with the vertical in equilibrium, then the tension in the string $AB$ is :
$F / \sin \theta$
$F \sin \theta$
$F \cos \theta$
$F / \cos \theta$
Choose the correct statement
If the coefficient of friction between an insect and bowl is $\mu$ and the radius of the bowl, is $r$, the maximum height to which the insect can crawl in the bowl is :
The pulleys in the diagram are all smooth and light. The acceleration of $A$ is $a$ upwards and the acceleration of $C$ is $f$ downwards. The acceleration of $B$ is
A body of mass $8\,kg$ is hanging another body of mass $12\,kg$. The combination is being pulled by a string $T _2$ will be respectively: (use $g =9.8\,m / s ^2$ )
Two blocks are in contact on a frictionless table. One has mass $m$ and the other $2\,m$. A force $F$ is applied on $2\,m$ as shown in the figure. Now the same force $F$ is applied from the right on $m$. In the two cases respectively, the ratio force of contact between the two block will be: