Laws Of Motion Question 153
Question: A block of mass M is pulled along a horizontal frictionless surface by a rope of mass m. If a force P is applied at the free end of the rope, the force exerted by the rope on the block will be [CBSE PMT 1993; CPMT 1972, 75, 82; MP PMT 1996; AIEEE 2003]
Options:
A)P
B) $ \frac{Pm}{M+m} $
C) $ \frac{PM}{M+m} $
D) $ \frac{Pm}{M-m} $
Show Answer
Answer:
Correct Answer: C
Solution:
Acceleration of the system $ =\frac{P}{m+M} $ The force exerted by rope on the mass $ =\frac{MP}{m+M} $
