Question

A block is sliding down a frictionless inclined plane with acceleration $a$. If we tripled the mass of the block, what is its new acceleration?

• A. $a/4$
• B. $a/2$
• C. $a$
• D. $2a$
• E. $4a$

Answer 1

Answer: (C)

$a$

From figure, acceleration of the block $a=gsin\theta$

$⟹$ acceleration of block is independent of mass of block.

Thus the new acceleration of block $a^{\prime }=a$