Question 1 :
A particle is moving in a circle of radius <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e97fedb4e70da2c08cb2db1">  with constant speed <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e97fefccf5ae23387f28fac"> , if radius is double then its centripetal force to keep the same speed should be

Question 2 :
A body executing uniform circular motion has at any instant its velocity vector and acceleration vector

Question 3 :
A body of mass 5 kg is moving in a circle of radius 1 m with an angular velocity of 2 <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e9801394e70da2c08cb3d9d"> . The centripetal force, is

Question 4 :
A stone tied with string is rotated in a vertical circle. The minimum speed with which the string has to be rotated

Question 5 :
The force required to keep a body in uniform circular motion is

Question 7 :
In an atom for the electron to revolve around the nucleus, the necessary centripetal force is obtained from the following force exerted by the nucleus on the electron

Question 8 :
Which one of the following statements is not correct in a uniform circular motion

Question 9 :
An aeroplane flying horizontally with a speed of <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e9801334e70da2c08cb3d53">  releases a bomb at a height of 490 m from the ground. When will the bomb strike the ground?

Question 10 :
A body of mass 0.4 kg is whirled in a vertical circle making 2rev/s. If the radius of the circle is 2m, then tension in the string when the body is at the top of the circle is

Question 11 :
An electric fan has blades of length 30 cm measured from the axis of rotation. If the fan is rotating at 120 rpm, the acceleration of a point on the tip of the blade is

Question 13 :
At the top of the trajectory of a projectile, the direction of its velocity and acceleration are

Question 14 :
If a body is projected with an angle <img style='object-fit:contain' src="https://storage.googleapis.com/teachmint/question_assets/NEET/5e97fec8cf5ae23387f28f0c">  to the horizontal then

Question 15 :
The time period of the second’s hand of a watch is