Pressure Revision

The diagram shows a 10 kg box with dimensions 12 cm x 4 cm x 3 cm placed on a surface.

What is the pressure exerted on the surface by the box?

• 2.08 Pa

• 2 083 Pa

• 20 800 Pa

• 694 000 Pa

The diagram shows a 80 kg refrigerator with dimensions 6 m x 2 m x 10 m placed on a surface.

What is the maximum pressure exerted on the surface by the parcel?

• 26.7 Pa

• 80 Pa

• 267 Pa

• 800 Pa

The diagram shows a 5 kg glass panel with dimensions 4 m x 8 m x 1 m placed on a surface.

What is the minimum pressure exerted on the surface by the glass panel?

• 0.156 Pa

• 1.25 Pa

• 1.56 Pa

• 12.5 Pa

Bob pops a balloon with a stick.

The contact surface area of the stick is 4 cm².

Assuming that it takes approximately 112 kPa to pop a balloon, how much force did Bob exert to pop the balloon?

• 44.8 N

• 28 000 N

• 448 000 N

• 280 000 000 N

A total of 562500 Pa is exerted onto the floor by a pair of stiletto heels worn by a lady, each with a contact surface area of 4 cm².

How heavy is the lady?

• 22.5 kg

• 45 kg

• 225 kg

• 450 kg

Which topics do you like to revise in the next few activities? You may tick more than one topic!

(There is no correct answer for this question)

• Kinematics

• Dynamics

• Mass, Weight and Density

• Turning Effects of Forces

• Energy, Work and Power