1) A boy weighs 392 Newtons.What is his mass?
2) A baby weighs 8.0 pounds. What is his mass in slug?
3) An object has a mass of 50 grams. What is its weight in dynes?
4) An object has a mass of 75 grams. What is its weight in newtons?
To find the mass of an object, divide its weight by the acceleration due to gravity (g). The acceleration due to gravity on Earth is approximately 9.8 m/s².
1) To find the mass of the boy, divide his weight (392 Newtons) by the acceleration due to gravity (9.8 m/s²).
Mass = Weight / Acceleration due to gravity
Mass = 392 N / 9.8 m/s²
Mass ≈ 40 kg
2) To find the mass of the baby in slug, divide the weight given in pounds by the acceleration due to gravity (32.2 ft/s²).
Mass = Weight / Acceleration due to gravity
Mass = 8.0 lb / 32.2 ft/s²
Mass ≈ 0.248 slug
3) To find the weight of an object in dynes, multiply its mass by the acceleration due to gravity (980 cm/s²).
Weight = Mass * Acceleration due to gravity
Weight = 50 g * 980 cm/s²
Weight ≈ 49000 dynes
4) To find the weight of an object in newtons, divide its mass by 1000 to convert grams to kilograms, then multiply by the acceleration due to gravity (9.8 m/s²).
Weight = Mass * Acceleration due to gravity
Weight = 75 g / 1000 kg/g * 9.8 m/s²
Weight ≈ 0.735 N