EASY
11th Telangana Board
IMPORTANT
Earn 100

Why are spokes provided in a bicycle wheel?

Important Questions on Systems of Particles and Rotational Motion

MEDIUM
11th Telangana Board
IMPORTANT
Intermediate First Year Physics>Chapter 7 - Systems of Particles and Rotational Motion>EXERCISES>Q 5

We cannot open or close the door by applying force at the hinges. Why?

HARD
11th Telangana Board
IMPORTANT
Intermediate First Year Physics>Chapter 7 - Systems of Particles and Rotational Motion>EXERCISES>Q 6
Why do we prefer a spanner of longer arm as compared to the spanner of shorter arm?
HARD
11th Telangana Board
IMPORTANT
Intermediate First Year Physics>Chapter 7 - Systems of Particles and Rotational Motion>EXERCISES>Q 7
By spinning eggs on a table top, how will you distinguish a hard boiled egg from a raw egg?
HARD
11th Telangana Board
IMPORTANT
Intermediate First Year Physics>Chapter 7 - Systems of Particles and Rotational Motion>EXERCISES>Q 8
Why should a helicopter necessarily have two propellers?
HARD
11th Telangana Board
IMPORTANT
Intermediate First Year Physics>Chapter 7 - Systems of Particles and Rotational Motion>EXERCISES>Q 9
If the polar ice caps of the earth were to melt, what would the effect of the length of the day be?
HARD
11th Telangana Board
IMPORTANT
Intermediate First Year Physics>Chapter 7 - Systems of Particles and Rotational Motion>EXERCISES>Q 10
Why is it easier to balance a bicycle in motion?
MEDIUM
11th Telangana Board
IMPORTANT
Intermediate First Year Physics>Chapter 7 - Systems of Particles and Rotational Motion>EXERCISES>Q 1

Distinguish between centre of mass and centre of gravity.

HARD
11th Telangana Board
IMPORTANT
Intermediate First Year Physics>Chapter 7 - Systems of Particles and Rotational Motion>EXERCISES>Q 2

Show that a system of particles moving under the influence of an external force., moves as if the force is applied at its centre of mass.