Question

A wooden block of length 2 m, width 1 m and thickness 0.5 m has a density of 800 kg m-3

.

Find its mass?​

Answer 1

Given :

• Dimensions of wooden block are :
• length : 2m
• breadth : 1 m
• Width : 0.5 m

• Density of wooden block = 800 kg/m³

To find :

• The mass of the wooden block .

Solution :

• By the formula of mass density :

$\boxed{\tt \red{density}= \frac{mass}{volume}}$

$\underline{\therefore \tt mass = density \times volume}$

So , to find mass , we first need to calculate the volume of the wooden block .

• Volume = length × Breadth × Height

= 2 × 1 × 0.5

= 1 m³

• Volume = 1 m³
• Density = 800 kg/m³

Mass = 800 × 1

Mass = 800 kg

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$\underline{ \underline{ \large \mathfrak{ \red{some} \: \purple{basic} \: \orange{concepts :} }}}$

• The amount of matter present in a substance is called its mass . It is a fixed quantity and doesn't change anywhere in the universe. Every body had some mass.

• The amount of space enclosed within a substance is called its volume .

• The physical quantity that gives how densely or loosely the molecules in a substance are present is called density . It determines if the body will float or sink in water .