Laws Of Motion Question 114
On the horizontal surface of a truck (m = 1 kg), a block of mass 1 kg is placed.If the truck is accelerating at the rate of 5m/sec2 then frictional force on the block will be [CBSE PMT 2001]
Options:
5 N
6 N
C) 5.88 N
D) 8 N
Show Answer
Answer:
Correct Answer: A
Solution:
$ F _{l}=\mu mg=0.6\times 10\times 9.8=58.8\ N $
Pseudo force on the block = $ m a=1\times 5=5\ N $
Pseudo is less than limiting friction hence static force of friction = 5 N.
BETA
