A block of mass 5 kg is (i) pushed in case (A) and (ii) pulled in case (B), by a force F=20 N, making an angle of 30
with the horizontal, as shown in the figures. The coefficient of friction between the block and floor is 
. The difference between the accelerations of the block, in case (B) and case (A) will be : (g=10 ms−2)
a)
0.4 ms−2
b)
3.2 ms−2
c)
0 ms−2
d)
0.8 ms−2
with the horizontal, as shown in the figures. The coefficient of friction between the block and floor is . The difference between the accelerations of the block, in case (B) and case (A) will be : (g=10 ms−2)a)
0.4 ms−2
b)
3.2 ms−2
c)
0 ms−2
d)
0.8 ms−2
Question ID - 51534 | SaraNextGen Top Answer A block of mass 5 kg is (i) pushed in case (A) and (ii) pulled in case (B), by a force F=20 N, making an angle of 30 with the horizontal, as shown in the figures. The coefficient of friction between the block and floor is . The difference between the accelerations of the block, in case (B) and case (A) will be : (g=10 ms−2)
a)
0.4 ms−2
b)
3.2 ms−2
c)
0 ms−2
d)
0.8 ms−2
A block of mass 5 kg is (i) pushed in case (A) and (ii) pulled in case (B), by a force F=20 N, making an angle of 30 with the horizontal, as shown in the figures. The coefficient of friction between the block and floor is . The difference between the accelerations of the block, in case (B) and case (A) will be : (g=10 ms−2)
|
a) |
0.4 ms−2 |
b) |
3.2 ms−2 |
|
c) |
0 ms−2 |
d) |
0.8 ms−2 |
N = 60 N
F = 0.2 × 60 = 12 N
= 
= 1.06 m/s2
For B N = 40 N
F = 8 N ⇒ 
s2
m/s2