forces 1.5.1

Question 1

forces may produce …

Answer 1

… changes in the size and shape of an object

Question 2

explain how a graph can obey the hooke’s law

Answer 2

• it is starting from origin
• straight line
• gradient is constant

Question 3

elastic limit

Answer 3

point beyond which a spring/ elastic chord loses its elasticity and hooke’s law isn’t obeyed

Question 4

force =

Answer 4

= spring constant x extension

Question 5

extension =

Answer 5

= increase in length - original length

Question 6

limit of proportionality

Answer 6

up to this limit, the extension on a spring is proportional to load

Question 7

resultant force may change the
velocity of an object …

Answer 7

…by changing its direction of motion or its speed