Question

7.
In the two curves drawn between frictional
force f and applied force F for 2 bodies on
ground. Then correct statement is
fa
fa
40 N
20 N
se,
→F
►F
(A)
(B
2
(1) , > 0
(2) Coefficient of static friction may be more for (B)
(3) Coefficient of kinetic friction is same as
coefficient of static friction for both
(A) & (B)
(4) Coefficient of static friction will be more for (A)​

Answer 1

Answer:

F

►F

(A)

(B

2

(1) , > 0

(2) Coefficient of static friction may be more for (B)

(3) Coefficient of kinetic friction is same as

coefficient of static friction for both

(A) & (B)

(4) Coefficient

$5 {6 \times \\ \\ \\ \\ \\ 3 \times \times \times - - - \times \frac{?}{?} }^{?}$

Answer 2

Answer:

(A) & (B)

Explanation:

Given:

force f and applied force F for 2 bodies on

Let:

$f_{b}=u*(\frac{m}{2}+m)*g$

=0.1+3mg/2=0.15mg

Now both blocks move together

$f_{a} > =m_{a}\\f_{a} > =\frac{m}{2*\frac{3m}{2} }\\F=f_{a}+f_{b}$                          

0.15mg+0.1mg=0.25mg

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