Q. 20

# Two blocks made of different metals identical in shape and size are acted upon by equal forces which cause them to slide on a horizontal surface. The acceleration of the second block is found to be 5 times that of the first. What is the ratio of the mass of the second to first?

Let the mass of first block = m1
acceleration of block of mass m1 = a
Let the mass of second block = m2
acceleration of block of mass m2 = 5a

Force = mass acceleration

Since forces are equal,

m1 a = m25a

= = 5

=

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