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Physics
UTME / JAMB 2025
Friction
Solution
A Force 18 N pulls a 40 kg mass on a horizontal floor at 0.3 ms\(^{-2}\). Find the coefficient of friction.
A
0.003
B
0.015
C
0.300
D
0.600
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2025
Friction
Solution
The tangential force acting on an object that opposes it from sliding freely on the adjacent surface is called
A
Weight
B
Upthrust
C
Frictional force
D
Normal force
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2025
Friction
Solution
A block with an initial speed of 10 m/s slides on a horizontal surface and comes to rest after traveling a distance of 25 m. What is the coefficient of kinetic friction between the block and the surface? (Take g = 9.8 m/s\(^2\)).
A
0.1
B
0.3
C
0.2
D
0.5
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2023
Friction
Diagram
Solution
A 400 N box is being pushed across a level floor at a constant speed by a force P of 100 N at an angle of 30.0° to the horizontal, as shown in the the diagram below. What is the coefficient of kinetic friction between the box and the floor?
A
0.19
B
0.24
C
0.40
D
0.22
medium Difficulty
Study Explanation
Physics
WAEC / WASSCE 2022
Friction
Solution
In which of the following situations is friction not useful?
A
Operation of a grinding machine
B
Walking
C
Application of brakes
D
Moving piston in a sleeve
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2022
Friction
Solution
Tyres are treaded to?
A
increase weight of tyres
B
increase friction
C
increase its longevity
D
look good
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2022
Friction
Solution
If an object just begins to slide on a surface inclined at 30º to the horizontal,the coefficient of friction is?
A
√3
B
\(\frac{√3}{2}\)
C
\(\frac{1}{√2}\)
D
\(\frac{1}{√3}\)
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2021
Friction
Solution
When the breaks in a car are applied, the frictional force on the tyres is?
A
a disadvantage because it is in the direction of the motion of the car
B
a disadvantage because it is in the opposite direction of the motion of the car
C
an advantage because it is in the direction of the motion of the car
D
an advantage because it is in the opposite direction of the motion of the car
medium Difficulty
Study Explanation
Physics
WAEC / WASSCE 2013
Friction
Diagram
Solution
A block of wood of mass 5kg is pulled on a platform by a force of 40N as illustrated in the diagram above. If the frictional force, F experienced by the block is 12N, calculate the magnitude of the acceleration of the acceleration of the block
A
2.4ms-2
B
5.6ms-2
C
8.0ms-2
D
2.4ms2
medium Difficulty
Study Explanation
Physics
UTME / JAMB 2009
Friction
Solution
The terminal velocity of a ball-bearing falling through a viscous fluid is reached when the?
A
upthrust is equal to the weight of the ball
B
ball accelerate uniformly
C
upthrust is equal to the velocity of the ball
D
velocity is uniform
medium Difficulty
Study Explanation
Physics
WAEC / WASSCE 2005
Friction
Solution
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 coefficient of sliding friction. [g = 10.0ms\(^{-2}\)]
A
0.09
B
0.18
C
0.36
D
0.54
medium Difficulty
Study Explanation
Physics
UTME / JAMB 1978
Friction
Solution
The frictional force between two bodies?
A
exists only when there is relative motion or tendency for motion
B
acts so as to oppose the motion
C
depends on the normal reaction between the two surfaces
D
is relatively independent of the area in contact
E
has all of these characteristics
medium Difficulty
Study Explanation