A block of wood is kept on a tabletop. The mass of the wooden block is 5 kg and its dimensions are 40 cm × 20 cm × 10 cm . Find the pressure exerted by the wooden block on the tabletop if it is made to lie on the tabletop with its sides of dimensions 20 cm × 10 cm .

Given: Mass of the wooden block, m = 5 kg Dimensions of wooden block = 40 cm × 20 cm × 10 cm The weight of the wooden block applies a thrust on the tabletop. Thrust = F = m × g = 5 × 9 . 8 Thrust = 49 N Area of a side = length × breadth = 20 cm × 10 cm = 200 cm 2 = 0 . 02 m 2 Pressure = 49 0 . 02 = 2450 N m - 2 The pressure exerted by the wooden block on the tabletop is 2450 Nm - 2 .

A block of wood is kept on a tabletop. The mass of the wooden block is 5 kg and its dimensions are 40 cm × 20 cm × 10 cm . Find the pressure exerted by the wooden block on the tabletop if it is made to lie on the tabletop with its sides of dimensions 40 cm × 20 cm .

Given: Mass of the wooden block, m = 5 kg dimensions = 40 cm × 20 cm × 10 cm The weight of the wooden block applies a thrust on the tabletop. Thrust = F = m × g = 5 × 9 . 8 Thrust = 49 N Area of a side = length × breadth = 40 cm × 20 cm = 800 cm 2 = 0 . 08 m 2 Pressure = F A = 49 0 . 08 Pressure = 612 . 5 Nm - 2 The pressure exerted by the wooden block on the tabletop is 612 . 5 Nm - 2 .

E M B I B E

Modern's abc+ Of Science - Physics For Class IX>Chapter 4 - Floating Bodies>Summative Assessment>Q 4

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9th CBSE

IMPORTANT

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What are the laws of floatation?

Important Questions on Floating Bodies

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9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 4 - Floating Bodies>Summative Assessment>Q 5

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9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 4 - Floating Bodies>Summative Assessment>Q 6

Discuss an activity to prove the laws of floatation.

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 4 - Floating Bodies>Summative Assessment>Q 1

Explain the laws of floatation.

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9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 4 - Floating Bodies>Summative Assessment>Q 2

Write a short note on the physical quantity relative density.

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9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 4 - Floating Bodies>Summative Assessment>Q 3

Explain Archimedes principle with an example.

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9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 4 - Floating Bodies>Summative Assessment>Q 1

A block of wood is kept on a tabletop. The mass of the wooden block is $5 kg$ and its dimensions are $40 cm \times 20 cm \times 10 cm$ . Find the pressure exerted by the wooden block on the tabletop if it is made to lie on the tabletop with its sides of dimensions $20 cm \times 10 cm$ .

EASY

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 4 - Floating Bodies>Summative Assessment>Q 1

A block of wood is kept on a tabletop. The mass of the wooden block is $5 kg$ and its dimensions are $40 cm \times 20 cm \times 10 cm$ . Find the pressure exerted by the wooden block on the tabletop if it is made to lie on the tabletop with its sides of dimensions $40 cm \times 20 cm$ .