Lesson 3.03f
3.03f Weight Quiz: OCR Maths, Unit 18
20 questions
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Lesson 3.03f, Weight: 20 multiple choice questions for the OCR Maths (H240), Unit 18: Forces and Newton's Laws, written with Revision Ninja.
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The 20 questions
-
What formula links an object's weight W, mass m, and acceleration due to gravity g?
- W = g/m
- W = m + g
- W = mg
- W = m/g
-
What standard value of gravitational acceleration g is typically assumed in OCR A Level Maths?
- 9.7 ms^-2
- 9.81 ms^-2
- 9.8 ms^-2
- 10 ms^-2
-
Which SI unit is used to measure the weight of an object?
- Joule
- Kilogram
- Newton
- Pascal
-
Why does the value of gravitational acceleration g vary on different astronomical bodies?
- Rotation speed
- Mass and radius
- Atmospheric pressure
- Distance to Sun
-
What is the weight of a 5 kg mass on Earth where g is 9.8 ms^-2?
- 49 N
- 490 N
- 0.51 N
- 4.9 N
-
An object has a weight of 196 N on Earth. What is its mass?
- 200 kg
- 19.6 kg
- 20 kg
- 2 kg
-
Which force acts perpendicular to a contact surface to support an object?
- Frictional force
- Normal reaction
- Gravitational force
- Tension force
-
According to Newton's third law, action and reaction forces are equal and what?
- Opposite in direction
- Same in direction
- Perpendicular in direction
- Parallel and same
-
A box of mass 10 kg rests on flat horizontal ground. What is the normal reaction force?
- 0 N
- 9.8 N
- 10 N
- 98 N
-
A particle of mass 2 kg falls freely under gravity. What is its acceleration?
- 19.6 ms^-2
- 4.9 ms^-2
- 9.8 ms^-2
- 0 ms^-2
-
On the Moon g is 1.6 ms^-2. What is the weight of a 10 kg object there?
- 160 N
- 1.6 N
- 98 N
- 16 N
-
What happens to the mass of an object when it is moved from Earth to the Moon?
- Increases
- Remains unchanged
- Becomes zero
- Decreases
-
In a system where connected components have no relative motion, how can it be modelled?
- Light rod
- Flexible string
- Multiple particles
- Single particle
-
Two connected blocks of mass 3 kg and 2 kg rest on horizontal ground. What combined weight acts?
- 49 N
- 29.4 N
- 98 N
- 5 N
-
An object of weight 98 N hangs stationary from a vertical rope. What is the tension?
- 196 N
- 98 N
- 10 N
- 0 N
-
What is the mass of an object whose weight on Earth is 9.8 N?
- 1 kg
- 0.1 kg
- 9.8 kg
- 10 kg
-
A lift accelerates downwards at 2 ms^-2. What is the apparent gravitational acceleration inside?
- 2 ms^-2
- 11.8 ms^-2
- 7.8 ms^-2
- 9.8 ms^-2
-
A body of weight W rests on a plane inclined at 30 degrees. What is the normal reaction?
- W sin 30°
- W cos 30°
- W tan 30°
- W
-
A block of mass 4 kg is pulled upwards with a force of 50 N. What is its acceleration?
- 2.7 ms^-2
- 2.5 ms^-2
- 12.5 ms^-2
- 3.2 ms^-2
-
According to Newton's third law, on how many different bodies do action-reaction pairs act?
- One body
- Two bodies
- Any number
- Three bodies
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