By using the principle of moment, determine the direction of the see-saw as shown.
Turning in the clockwise direction
5
Where is the position of the pivot?
C
5
Fill in the blanks with appropriate order of the words.
negative, positive
10
Some materials which allow an electric current to flow through them are called
conductor
5
An example of a class 2 lever type is
nutcracker
5
Lightning is an example of charging materials by
friction
10
The one with minus sign is called
electron
5
If the clockwise and anticlockwise moments on a seesaw are equal, what will happen?
The seesaw is balanced and will not move.
10
SI unit of charge is?
Coulomb (C)
5
A class 2 lever has the _________ in the middle
load
10
Which of the given conditions above increases the moments?
i and ii
10
What are the charges on sides X and Y of the sphere?
X = - (N) || Y = + (P)
10
What is the force F needed to balance the see-saw?
m1=m2 | F1 x A1=F2 x A2 | F x 7=700 x 3 | F = 300 N
20
Which class lever does the photo show?
class 1: A and C, class 3: B
10
Mike and Oliver sit on a see-saw. Mike sits 2 m away from the pivot and weighed 500 N downward, while Oliver is x meter away from the pivot and weighed 1000 N. What is the value of x?
1.0 m
20
Aluminum, glass, plastic, wood. Out of those four, which material could you put in the gap to make reading on the meter?