The maximum % error we should use when calculating the mass of a light object is

The maximum % error we should use when calculating the mass of a light object is

a) 3
b) 5
c) 10
d) 15
e) 20





Answer: E

The approximate mass of a 15 cm "I" beam is

The approximate mass of a 15 cm "I" beam is

a) 20 kg per running metre
b) 60 kg per running metre
c) 30 kg per running metre
d) 26 kg per running metre
e) 37 kg per running metre






Answer: D

The most common method of getting a reasonable idea of an object's __________ is by estimating it.

The most common method of getting a reasonable idea of an object's __________ is by estimating it.

a) size
b) shape
c) density
d) mass
e) specific gravity

Answer: D

Prior to hoisting an object it is best to

Prior to hoisting an object it is best to

a) know the route required
b) know or calculate the mass
c) measure its length
d) attach at least two slings
e) measure the width







Answer: B