A simple pendulum with a bob of mass $m$ is suspended from the roof of a car moving with a horizontal acceleration $a.$ Then

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A simple pendulum with a bob of mass $m$ is suspended from the roof of a car moving with a horizontal acceleration $a .$ Then

A simple pendulum with a bob of mass $m$ is suspended from the roof of a car moving with a horizontal acceleration $a .$ Then A. The string makes an angle of $\tan^{-} (\frac{a}{g})$ with the vertical.B. The string makes an angle of ${\tan ^ – }\left( {1 Read more…

By ThinkMerit, 5 years5 years ago

Questions

Two blocks $A$ and $B$ of mass $m_{A}$ and $m_{B}$ respectively are kept in contact on a frictionless table. The experimenter pushes the block $A$ from behind so that the blocks accelerate. If the block $A$ exerts a force $F$ on the block $B$ , what is the force exerted by the experimenter on $A$ ?

Two blocks $A$ and $B$ of mass $m_{A}$ and $m_{B}$ respectively are kept in contact on a frictionless table. The experimenter pushes the block $A$ from behind so that the blocks accelerate. If the block $A$ exerts a force $F$ on the block $B$ , what is the force exerted by Read more…

By ThinkMerit, 5 years5 years ago

Questions

The force of buoyancy exerted by the atmosphere on a balloon is $B$ in the upward direction and remains constant. The force of air resistance on the balloon acts opposite to the direction of velocity and is proportional to it. The balloon carries a mass $M$ and is found to fall down near the earth’s surface with a constant velocity $v .$ How much mass should be removed from the balloon so that it may rise with a constant velocity $v$ ?

The force of buoyancy exerted by the atmosphere on a balloon is $B$ in the upward direction and remains constant. The force of air resistance on the balloon acts opposite to the direction of velocity and is proportional to it. The balloon carries a mass $M$ and is found to Read more…

By ThinkMerit, 5 years5 years ago

Questions

A mother is twice as old as her son. If 20 years ago, the age of the mother was 10 times the age of the son, what is the present age of the mother?

Question: A mother is twice as old as her son. If 20 years ago, the age of the mother was 10 times the age of the son, what is the present age of the mother? A. 38 yearsB. 40 yearsC. 43 yearsD. 45 years Answer: 45 years Solution: Let the Read more…

By ThinkMerit, 5 years2 years ago