Answer ALL questions. Look for any feedback given if you get an answer incorrect. Keep choosing an answer until you get it correct. CORRECT or INCORRECT answers are indicated at the TOP of the page. A score is given at the TOP of the page when the exercise has been completed.
Calculate the EFFORT FORCE required to balance the LOAD shown below.
44.2 N
28.8N
53.6N
68.0N
Calculate the MASS of the LOAD required to balance the EFFORT applied shown below.
118.2kg
1160.1N
824.6N
266.2kg
Calculate the distance D required to balance the EFFORT and LOAD shown below.
6.45m
5.64m
4.54m
6.65m
A van accelerates from a Velocity of 22m/s up to 63m/s in 26 seconds. Calculate its average ACCELERATION
1.58 metres per second squared
2.18 metres per second squared
1.12 metres per second squared
3.32 metres per second squared
A large cable reel escapes down a ramp with Velocity of 1m/s up to 7m/s in 3.1 seconds. Calculate its average ACCELERATION
1.94 metres per second squared
0.49 metres per second squared
2.12 metres per second squared
1.64 metres per second squared
A 20kg bag of sand falls from a scaffold. With what FORCE will it strike the ground?
196.2 N
196.2kg
169.2N
169.2kg
A lift on a building site lifts 400kg of bricks 50m to the top of a building. Calculate the WORK DONE by the lift?
196.2kJ
238.4J
277.6kJ
166.6J
A crane on a building site lifts 4.1 tonnes of steel beams 65m to the top of a building. Calculate the WORK DONE by the crane?
2.61MJ
3.35kJ
3.35MJ
2.61mJ
A lift on a building site lifts 400kg of bricks 50m to the top of a building in 24 seconds. Calculate the POWER of the lift motor?
8.175kW
10.224kW
7.725kW
9.887kW
A crane on a building site lifts 4.1 tonnes of steel beams 65m to the top of a building in 2 minutes. Calculate the POWER of the crane motor?
21.79kW
19.21kW
22.22kW
35.51kW
In the picture below, the pile of bricks hits the ground with a force of 865N. Calculate the MASS of the bricks.
88.18kg
78.18kg
98.18kg
108..18kg
The crane shown below lifts a load of blocks with a mass of 2 tonnes a vertical distance of 25 metres in 4 minutes. Calculate the POWER of the crane motor.
2.044kW
1.999kW
2.144kW
2.024kW
A crane raises a 2.5 tonne load vertically in 4 minutes and 10 seconds. The crane motor is rated at 10kW. What is the vertical height to which to load is raised?
91.1m
101.9m
88.9m
110.1m
The van covers a distance of 15km in half an hour. Calculate its average speed.
8.33m/s
10.33m/s
7.33m/s
9.33m/s
An electric hoist on the side of a building lifts a quantity of electrical equipment through a vertical distance in 3.5 minutes. The motor rating of the hoist is 189.19w. Calculate the MASS of the LOAD.
90g
80kg
90000g
800g
What CLASS of lever is shown here (Effort is indicated by the arrow) -
1st class
2nd class
3rd class
4th class
What CLASS of lever is shown here (Effort is indicated by the arrow) -
2nd class
1st class
3rd class
4th class
What CLASS of lever is shown here (Effort is indicated by the arrow) -
3rd class
1st class
2nd class
4th class
What is the VELOCITY RATIO of the pulley system shown here?