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Two blocks of mass M and m, are used to ...


Two blocks of mass M and m, are used to compress two different massless spring as shown. The left spring is compressed by 3 cm, while the right spring is compressed by an unknown amount.. The system is at rest, and all surfaces fixed and smooth. Which of the following statements are true?

A

The force exerted on block of mass m by the right spring is 6 N to the left.

B

The force exerted on block of mass m by the right spring is impossible to determine.

C

The net force on block of mass m is zero

D

The normal force exerted by block of mass m on block of mass M is 6N.

Text Solution

Verified by Experts

The correct Answer is:
A, C, D


Let F be the force exerted by mass m on mass M.
FBD of mass M
`F=k_1x_1=2xx3=6N`
FBD of mass m
`k_2x_2=F=6N` to the left Hence the force exerted on block of mass m be the right spring `(k_2x_2)` is 6N to the left. From FBD, the normal reaction (F) between blocks is 6 N. As system is at rest, net force on block of mass m is zero.
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