Question 2 :
Let $a_r$ and $a_t$ represents radial and tangential acceleration. The motion of a particle may be circular if
Question 3 :
A satellite is orbiting round the earth. If both gravitational force and centripetal force on the satellite is $'F'$ then net force acting on the satellite to revolve round the earth is<br/>
Question 4 :
If a particle tied to the end of a string is set in a circular motion, then the tension of the string is:<br/>
Question 5 :
Assertion (A): The work done by centripetal force is zero.<br/>Reason (R) : The displacement of body in the direction of centripetal force is zero.<br/>
Question 9 :
An aeroplane is moving in a circular path with a speed of $200m/s$. If the mass of the plane is $1500kg$, and the force acting on it is equal to $120kN$, then find the radius of the circle of motion.
Question 10 :
The mass of the moon is about $1.2$% of the mass of the earth. Compared to the gravitational force the earth exerts on the moon, the gravitational force the moon exerts on earth
Question 12 :
If a body moves on the circumference circle in a horizontal plane with speed equal to that it acquired by falling freely through half the radius of circle its centripetal acceleration is
Question 13 :
An annular ring with inner and outer radii as $ { R }_{ 1 } $ and $ { R }_{ 2 } $ is rolling without slipping with a uniform angular speed. The ratio of the force experienced by the two points situated on the inner and outer parts of rings is:<br>
Question 14 :
A golfer swings a golf club so that the end of the club is moving $30 m/s$ when it strikes the ball. The radius of the circular path for the end of the club (which includes the club and the golfer's arms) is $1.8 m$<br>What is the centripetal acceleration of the end of the club as its strikes the ball?
Question 15 :
What happens to centripital force of a revolving body if you double the orbital speed v and halve the angular velocity $ \omega $ :-
Question 16 :
A particle moving in a circle of radius $50$ cm with a uniform speed completes a revolution in $40$ s. The magnitude of the centripetal acceleration it experiences is ____ $\displaystyle cm\ { s }^{ -2 }$:
Question 17 :
A particle moving in a circle of radius 10 cm with a uniform speed, completes a revolution in 4 seconds. Then what is the magnitude of the centripetal acceleration(in $cm/s^2$) it experiences?<br/>
Question 18 :
A particle moving along a circular path due to a centripetal force having constant magnitude is an example of motion with
Question 19 :
If a body of mass $0.10 kg$ is moving on circular path of diameter $1.0 m$ at the rate of $10$ revolutions per $31.4 sec$, then centripetal force acting on the body ($\pi= 3.14$) is
Question 20 :
What approximately the centripetal acceleration (in units of acceleration due to gravity on earth, $g = 10\, m/s^2$) of an air - craft flying at a speed of $400\, m/s$ through a circular arc of radius $0.6\, km$...
