دائری حرکت

Written by Dr. Hamza Farooq (Physics)

گیارہویں جماعت · طبیعیات · 8 سوالات

نام: ____________________   تاریخ: ____________

1. The direction of centripetal force is:

   • A Tangent to the circle
   • B Away from the centre
   • C Towards the centre
   • D Along the velocity

2. An object moves in a circle of radius 2 m at 4 m/s. What is its centripetal acceleration?

   • A 4 m/s²
   • B 16 m/s²
   • C 2 m/s²
   • D 8 m/s²

3. Angular velocity of a wheel making 60 revolutions per minute is:

   • A 2 pi rad/s
   • B pi rad/s
   • C 120 pi rad/s
   • D 60 rad/s

4. The relation between linear speed v and angular speed omega is:

   • A v = r / omega
   • B v = r omega
   • C v = omega / r
   • D v = omega2 r

5. Artificial gravity in a rotating space station comes from:

   • A Nuclear force
   • B Magnetism
   • C Air pressure
   • D Centripetal force from the floor

6. The unit of angular displacement is the:

   • A Metre
   • B Second
   • C Radian
   • D Newton

7. A car goes round a flat circular bend. The centripetal force is provided by:

   • A The engine only
   • B Gravity
   • C Air resistance
   • D Friction between tyres and road

8. One revolution is equal to:

   • A 2 pi radians
   • B 360 radians
   • C 1 radian
   • D pi radians