Question 1 :
In uniform circular motion, the velocity vector and acceleration vector are:
Question 2 :
Uniform circular motion is called continuously accelerated motion mainly because its :
Question 3 :
The total energy of a particle that moves along a circular path in vertical plane is:<br/>
Question 4 :
A particle moves with a uniform speed of 5 m/s in a circular path. If the speed increases to 8 m/s in the 20th second. The motion of the particle in the 22nd second will be
Question 5 :
A string of length $ \ell $ has one end fixed and a particle of mass m is attached to the other end. If the particle describe a horizontal circle at an angular speed $ \omega $, in gravity free space.
Question 6 :
A motor of an engine is rotating about its axis with an angular velocity of $100$ rev/min . It comes to rest in $15$ s, after being switched off. Assuming constant angular deceleration, calculate the number of revolutions made by it before coming to rest.
Question 7 :
A stone tied to the end of a string $80\;cm$ long is whirled in a horizontal circle with a constant speed. If the stone makes $14$ revolutions in $22\;s$ then the acceleration of the stone is :
Question 8 :
A car sometimes overturns while taking a turn. When it overturns, it is
Question 9 :
A pulley $1m$ in diameter rotating at $600 r.p.m.$ is brought to rest in $80\ s$. By constant force of friction on its shaft. How many revolutions does it moves?
Question 10 :
A wheel is making Revolution about axis with uniform angular acceleration, Starting from rest, it reaches $100\ rev/sec$ in $4\ seconds$. Find the angular rotated during these four seconds.
Question 11 :
A uniform disc of mass $M$ and radius $R$ is mounted on an axle supported in frictionless bearings. A light cord is wrapped around the rim of the disc and a steady downward pull $T$ is exerted on the cord. The tangential acceleration of a point on the rim is
Question 12 :
The expression for the pressure at a point inside a liquid (Given liquid density $=\rho$, height of liquid column $h$ and acceleration due to gravity $=g$). <br/>
Question 13 :
Pressure at a point inside a liquid does not depends on
Question 14 :
Pressure which a fluid exerts on the sides of a container , below its free surface is known as
Question 15 :
Assertion: A body having the uniform density has same point, as centre of gravity and centre of buoyancy
Reason: While formulating the equation for positioning centre of mass and centre of buoyancy,has difference of the term of uniform density only.
Question 16 :
The walls of hydroelectric dams are made _____ at the base
Question 17 :
Deep sea divers wear specially designed suits to protect themselves from ________ .<br>
Question 18 :
<span>The height to which a cylindrical vessel be filled with a homogeneous liquid, to make the average force with which the liquid presses the side of the vessel equal to the force exerted by the liquid on the bottom of the vessel, is equal to</span> <br><br>
Question 20 :
A spherical tank of 1.2 m radius is half filled with oil of relative density 0.8. if the tank is given a horizontal acceleration of $10 m/s^2$, the maximum pressure on the tank is $\sqrt{2 p}$ pascal. Find the value of P.
Question 21 :
A liquid is flowing in a horizontal uniform capillary tube under a constant pressure difference p. The value of pressure for which the rate of flow of the liquid is doubled when the radius and length both are doubled, is
Question 22 :
A capillary tube with inner cross-section in the form of a square of side a is dipped vertically in a liquid of density $ \rho $ and surface tension $ \sigma $ which wet the surface of capillary tube with angle of contact $ \theta $. The approximate height to which liquid will be raised in the tube is : (Neglect the effect of surface tension at the corners of capillary tube)
