Mechanics Random Retrieval

1

Mechanics Random Retrieval

This quiz contains all the questions in the Mechanics section. The website will pick 10 questions at random.

1 / 10

You're down the allotment and are carrying your 65 kg Nana in a 20kg wheelbarrow. Your Nana's and the wheelbarrow's weight acts 60 mm from the centre of the wheel. What force do you need to apply to the end of the handle, 1.2 m from the centre of the wheel, to move your Nana about? g = 9.81 ms-2

2 / 10

The Space Shuttle has a mass of 2.03x106 kg. Upon launch, it has two Solid Rocket Boosters (SRB) providing 12,000 kN of thrust in 123 s. It uses the SRB's to ascend to an altitude of 46 km before jetsoning them. Calculate the Space Shuttle's velocity. Ignore any change in mass due to spent fuel. g = 9.81 ms-2

3 / 10

A crane lifts a Rolls-Royce Trent 1000 engine into place. The engine has a mass of 5,936 kg and is lifted vertically 10 m by the crane in 12 seconds. Calculate the power of the crane. g = 9.81 Nkg-2.

4 / 10

A bungee jumper of mass 74 kg, falls 68.5 m before the bungee cord begins to stretch. Calculate the gravitational potential energy lost by the bungee jumper in falling 68.5 m. g = 9.81 Nkg-1.

5 / 10

You can feel your phone in your hand, which Newtonian Law applies, if any?

6 / 10

A strong woman lifts a car at an angle of 25° and horizontal component of force is 1300 N. Calculate vertical component of the lift.

7 / 10

An ill prepared student asks for a pen to write with in class, and the teacher grudgingly lends one out. Instead of walking over to the student, the teacher decides to throw them the pen. The teacher throws the pen at angle of 14° and a speed of 23 ms-1. Sadly, the teacher misses and the pen continues on it's projected path out the window and takes 5 seconds to hit the car park outside.

Calculate the height different between the point of release and the car park floor. gEarth = 9.81 ms-2

8 / 10

A climber falls from a rock face and accelerates due to gravity for 3 seconds before his rope stops his fall. What distance did he fall?

9 / 10

A rugby player accelerates steadily from rest at 1.82 ms-2 for 4 seconds. Calculate their final speed.

10 / 10

Select if the following is a scalar or a vector: displacement

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