14. AIM Integrated PU Program, Jayalakshmipuram - Mysore
1. If A = 2i + 3j + 8k is perpendicular to B = 4j – 4i + αk then the value of ‘α’ is KCET 2017
a. 1/2 b. -1/2 c. 1 d. -1
15. AIM Integrated PU Program, Jayalakshmipuram - Mysore
2. A stone of mass 0.05 kg is thrown vertically upwards. What is the direction and magnitude of net force on the
stone during its upward motion? KCET 2015
a. 0.49 N vertically upwards b. 0.49 N vertically downwards
c. 0.98 N vertically downwards d. 9.8 N vertically downwards
16. AIM Integrated PU Program, Jayalakshmipuram - Mysore
3. A body of mass 50 kg, is suspended using a spring balance inside a lift at rest. If the lift starts falling freely, the
reading of the spring balance is KCET 2017
a. = 50 kg b. > 50 kg c. < 50 kg d. = 0
17. AIM Integrated PU Program, Jayalakshmipuram - Mysore
4. A man weighing 60 kg is in a lift moving down with an acceleration of 1.8 ms–2. The force exerted by the floor
on him is KCET 2018
a. 588 N b. 480 N c. Zero d. 696 N
18. AIM Integrated PU Program, Jayalakshmipuram - Mysore
5. An object with mass 5 kg is acted upon by a force, F = -3i + 4j N. If it’s initial velocity at t = 0 is
v = 6i - 2j ms-1, the time at which it will just have a velocity along y-axis is KCET 2019
a. 10 s b. 15 s c. 5 s d. 2 s
19. AIM Integrated PU Program, Jayalakshmipuram - Mysore
7. Maximum acceleration of the train in which a 50 kg box lying on its floor will remain stationary (Given:
Coefficient of static friction between the box and the floor of the train is 0.3 and g = 10 ms-2) KCET 2016
a. 5.0 ms-2 b. 3.0 ms-2 c. 1.5 ms-2 d. 15.0 ms-2
20. AIM Integrated PU Program, Jayalakshmipuram - Mysore
8. A block rests on a rough inclined plane making an angle of 30° with the horizontal. The coefficient of static
friction between the block and the plane is 0.8. If the frictional force on the block is 10 N, the mass of the block is
(g = 10 ms–2) KCET 2018
a. 1 kg b. 2 kg c. 3 kg d. 4 kg
21. AIM Integrated PU Program, Jayalakshmipuram - Mysore
9. One end of a string of length I is connected to a particle of mass ‘m’ and the other to a small peg on a
smooth horizontal table. If the particle moves in a circle with speed ‘v’, the net force on the particle (directed
towards the centre) is: (T is the tension in the string) KCET 2020
a. 0 b. T c. 𝑇 −
𝑚𝑣2
𝑙
d. 𝑇 +
𝑚𝑣2
𝑙
22. AIM Integrated PU Program, Jayalakshmipuram - Mysore
10. An aeroplane executes a horizontal loop at a speed of 720 kmph with its wings banked at 45o. What is the radius of the
loop? Take g = 10 ms−2 KCET 2014
a. 4 km b. 4.5 km c. 7.2 km d. 2 km
23. AIM Integrated PU Program, Jayalakshmipuram - Mysore
11. A person is driving a vehicle at uniform speed of 5 ms-1 on a level road curved track of radius 5 m. The
coefficient of static friction between tyres and road is 0.1. Will the person slip while taking the turn with the same
speed? Take g = 10 ms-2 KCET 2014
a. A person will slip is v2 = 5 ms-1 b. A person will slip if v2 > 5 ms-1
c. A person will slip if v2 < 5 ms-1 d. A person will not slip if v2 > 10 ms-1
