Laws Of Motion Question 113
Question: A block of mass 50 kg slides over a horizontal distance of 1 m.If the coefficient of friction between their surfaces is 0.2, then work done against friction is [BHU 2001; CBSE PMT 1999, 2000; AIIMS 2000]
Options:
A) 98 J
B) 72J
C) 56 J
D) 34 J
Show Answer
Answer:
Correct Answer: A
Solution:
$ W=\mu mgS=0.2\times 50\times 9.8\times 1=98\ J $
