Friction - Jamb Physics Past Questions and Answers

Question 31:

• JAMB 2018

In the diagram given the hanging mass m2 is adjusted until m1 is on the verge of sliding. The coefficient of static

A. \(\frac{m_1}{m_2}\)
B. \(\frac{m_1g}{m_2}\)
C. \(\frac{m_2}{m_1}\)
D. \(\frac{m_2g}{m_1}\)

Question 32:

• JAMB 2018

A 20kg mass is to be pulled up a slope inclined at 30° to the horizontal. If efficiency of the plane is 75%. The force required to pull the load up the plane is J [g=10ms\(^{− 2}\)]

A. 87N
B. 73.5N
C. 133.3N
D. 533.2N

Question 33:

• JAMB 2018

The friction which exist between two layers of liquid in relative motion is called.

A. Capillary
B. Surface
C. Viscosity
D. Cohesion

Question 34:

• JAMB 2019

The limiting frictional force between two surface depends on
I. the normal reaction between the surfaces
II. the area of surface in contact
III. the relative velocity between the surfaces
IV. the nature of the surface

A. I only
B. I & IV only
C. II only
D. III only

Question 35:

• JAMB 2019

The limiting frictional force between two surface depends on
I. the normal reaction between the surfaces
II. the area of surface in contact
III. the relative velocity between the surfaces
IV. the nature of the surface

A. I only
B. I & IV only
C. II only
D. III only