Forces: Gravity and Weight.

Question 1

What is gravity?

Answer 1

• Force of attraction between all objects.
• Non Contact force.
• ## Vector.

Question 2

What is mass?

Answer 2

• How much matter the object has.
• Scalar.
• ## Does not depend on where the object is.

Question 3

What is weight?

Answer 3

• Force acting on it due to gravity.
• Depend on where it is.
• Acts on a single point: Centre of mass.

Question 4

What is gravitational field strength?

Answer 4

• Measure of the force of gravity in a particular location.

(g) .

Question 5

How do we calculate the weight?

Answer 5

Weight (N)= Mass (kg) x Gravitational Field Strength (N/kg).

• The weight of a object is directly poportional to the mass of the object.
• Determine an objects weight by using a calibrated spring-balance, Newtonmeter.