Physics Past Questions and Answers

A body of mass 25kg, moving at 3ms^-1 on a rough horizontal floor is at rest after sliding through a distance of 2.50m on the floor. Calculate the co-efficient of sliding friction. [g = 10.0ms^-2]

A 0.09
B 0.18
C 0.36
D 0.54

Question 1022:

Which of the following simple machines is a second class lever?

A Wheel barrow
B Crowbar
C Claw hammer
D Seesae

Question 1023:

A wheel and axle of radii 800mm and 200mm respectively is used to raise a body of weight 800N by the application of 250N. Calculate the efficiency of the machine

A 85%
B 80%
C 60%
D 20%

Question 1024:

Masses,m¹ and m² at the 20-cm and 65-cm marks respectively of a uniform metre rule freely suspended at its centre of gravity. If the metre rule balances horizontally, determine the ratio m² : m¹

A 2 : 1
B 3 : 3
C 2 : 3
D 1 : 2

Question 1025:

Which of the following type of motion does a body undergo when acted upon by a couple?V

A Vibrational
B Translational
C Rotational
D Random