Subject :NSO Class : Class 4
Which of the following is correct about the girls moving the sack bags as shown in the above diagram?
1. Girl a has to work more against friction.
2. Girl b does not have to work against friction.
3. The wheels of the trolley have reduced the friction.
A 1 only
B 3 only
C 1 and 3 only
D 2 and 3 only
Ans 1:
Class : Class 6
c
Ans 2: (Master Answer)
Class : Class 1
C
Ans 3:
Class : Class 8
Admin , all know the answer . But can give the explanation , you always write the answer only
Ans 4:
Class : Class 7
C
Ans 5:
Class : Class 5
I don't have explanation but answer is C
Ans 6:
Class : Class 6