Centripetal and centrifugal forces - Jamb Physics Past Questions and Answers

Question 1:

• JAMB 2019

A mass of 0.5kg is whirled in a vertical circle of radius 2m at a steady rate of 2 rev/s. Calculate the centripetal force

A. 164N
B. 160N
C. 158N
D. 172N

Question 2:

• JAMB 1978

The force required to make an object of mass m, travelling with velocity v, turn in a circle of radius r is

A. \(\frac{mv^2}{r}\)
B. \(\frac{mr^2}{v}\)
C. \(\frac{mr}{v}\)
D. \(\frac{mv}{r^2}\)
E. \(\frac{mv}{r}\)

Question 3:

• JAMB 2012

Particles of mass 10^-2kg is fixed to the tip of a fan blade which rotates with angular velocity of 100rad-1. If the radius of the blade is 0.2m, the centripetal force is

A. 2 N
B. 20 N
C. 200 N
D. 400 N

Question 4:

• JAMB 2019

A mass of 0.5kg is whirled in a vertical circle of radius 2m at a steady rate of 2 rev/s. Calculate the centripetal force

A. 164N
B. 160N
C. 158N
D. 172N

Question 5:

• JAMB 2021

Particles of mass 10\(^{-2}\)kg is fixed to the tip of a fan blade which rotates with angular velocity of 100rad\(^{-1}\). If the radius of the blade is 0.2m, the centripetal force is?

A. 2N
B. 20N
C. 200N
D. 400N