A cylindrical block of radius "r" and mass "m" is lying on the table If its radius isdoubledand mass - Science - Gravitation

Question

A cylindrical block of radius
"r" and mass "m" is lying on the
table If its radius is d oubled and mass is
tripled then what happens to pressure acting on
the table ??

Jyoti Pant · Accepted Answer

Given that,

The radius of the cylinder =r and mass =m

So its weight W = mg

Area of cross-section, A = Ï€r2

So, pressure, P = mg/(Ï€r2)

Now, when the radius is doubled and mass is tripled, then
pressure,

P/
=
(3m)g/[Ï€(2r)2] =
(3/4)mg/(Ï€r2) = (3/4)P = 0 75P

Thus the pressure decreases and becomes 0 75 times the initial
pressure

A cylindrical block of radius "r" and mass "m" is lying on the table. If its radius is d oubled and mass is tripled then what happens to pressure acting on the table.??