Q11. A block weighing 48 N is placed on the ground on its base measuring 0.2 m × 0.4 m. Calculate the pressure it exerts.
Solution: Area = 0.2 × 0.4 = 0.08 m²
Pressure = 48 / 0.08 = 600 Pa

Q12. A suitcase weighing 120 N rests on a trolley with contact area 0.6 m². Calculate the pressure.
Solution: Pressure = 120 / 0.6 = 200 Pa

Q13. A student pushes a wall with a force of 100 N. The area of his hand is 0.05 m². Find the pressure exerted.
Solution: Pressure = 100 / 0.05 = 2000 Pa

Q14. A brick is 40 cm × 10 cm in contact with the floor and weighs 32 N. Find the pressure.
Solution: Area = 0.4 × 0.1 = 0.04 m²
Pressure = 32 / 0.04 = 800 Pa

Q15. A car weighing 10,000 N rests on four tyres. If the total area of contact is 0.5 m², calculate the pressure on the road.
Solution: Pressure = 10,000 / 0.5 = 20,000 Pa

Q16. A book weighing 10 N is placed on its side of 0.2 m × 0.03 m. Calculate the pressure on the table.
Solution: Area = 0.2 × 0.03 = 0.006 m²
Pressure = 10 / 0.006 = 1666.67 Pa

Q17. A hammer strikes a surface with a force of 300 N over a very small area of 0.002 m². What is the pressure?
Solution: Pressure = 300 / 0.002 = 150,000 Pa

Q18. A rectangular tile exerts a pressure of 1000 Pa on the floor. If its weight is 50 N, find the area in contact.
Solution: Area = 50 / 1000 = 0.05 m²

Q19. A force of 60 N acts on a nail head with an area of 0.0001 m². Calculate the pressure.
Solution: Pressure = 60 / 0.0001 = 600,000 Pa

Q20. A cement bag weighs 500 N and has a base area of 0.25 m². What pressure does it exert on the ground?
Solution: Pressure = 500 / 0.25 = 2000 Pa