Question 1 What is pressure? Question 2 Define the SI unit of pressure? Question 3 Why does a sharp knife cut objects more effectively than a blunt knife? Question 4 Why wooden sleepers are kept below the railway line? Question 5 Why a wide steel belt is provided over the wheels of an army tank? Question 6 Why the tip of a sweing needle is sharp? Question 7 … [Read more...] about Pressure
tractors have broad tyres
Mass, weight, pressure, thrust
Question 1 Define the term mass?Give its unit? Question 2 A man weight 600 N on the earth.what is his mass.If he were taken on the moon,his weight would be 100 N.what is his mass on the moon?What is the acceleration due to gravity on the moon? Question 3 How much a 70 kg man weigh on the moon.What would be his mass on the earth and on the moon? Question 4 Define … [Read more...] about Mass, weight, pressure, thrust